At the public aquarium, most of an aquarist’s time and effort is devoted on the care of marine life and when they maintain and repair the tanks that contain them.

With all the recent research into biometrics, security measures that are easily cracked such as passwords and PINs have been becoming gradually obsolete.

The discovery of alligator bones in the ruins of Haojing, part of the capital of ancient China’s Western Zhou dynasty (1046–771 BCE), helped archaeologists visualize an era in which large lakes had existed in now currently more arid regions.

The governor’s approval ratings are 5 percent higher now than a year ago and are going up, even though a tax increase and tightened environmental regulations are alienating business owners and therefore decreased support from his own party.

Because of a major oil spill, boats in the area netted only about 50 tons of fish, about 60 percent less than those of the 2014 catch.

Light rail, public transit that usually results in economic growth for small communities, often makes commuting easier in areas where little parking or buses exist.

American citizens were not generally required to have passports for international travel until 1941; prior to that year Washington was reliant on specific immigration laws, such as the U.S. Chinese Exclusion Act, to regulate international travel.

According to its engineers, a new kind of self-driving car could, by using multiple sensors and formal logic–based algorithms, provide taxi services in major American cities within the next five years.

When ironed with water and steady heat, acrylic, a petroleum-based synthetic fiber, softens and drapes with an almost silken feel and staying this way whether or not the heat is gone and the water has dried.

The baseball team celebrated strong postseason results that exceeded sports analysts’ expectations and announced the first in a series of key player trades intended to bolster their defensive lineup for the following season.

Like Mondrian, the technique of Theo van Doesburg is stark, bold, and linear—marked by sharp geometric patterns as well as a tightly controlled palette of colors.

Jeremy Clementov, an escaped prison inmate spotted in northern Georgia in recent weeks, has taken to robbing local banks, thus posing a danger to public safety. To ensure the suspect’s capture, the F.B.I. has taken to publishing information about the suspect on its Georgia division’s website. The website displays photographs of the suspect and a list of his crimes; the website also instructs visitors to report the suspect, should he be spotted.

Which of the following, if true, would provide most support for the prediction that the F.B.I.’s action will have its intended effect?

Blahdenburg’s population of flutterfish declined in the past decade, mainly because of the harmful runoff from a local factory. These fish are the primary food source of the hamrat, a medium-sized species of rodent whose numbers had suffered along with their prey’s. Yet although the factory was shut down a few years ago, the population of hamrats has continued to decline.

Which of the following, if true, most helps to explain the continued decline in the hamrat population?

One company is thinking about reorganizing the way it divides its office space. At the moment, the company divides its floor space into cellular offices—a number of individual offices with permanent walls. Another option is the open-plan office, which consists of a large open area with few or no permanent divisions.

The implementation of an open-plan layout would be most advantageous to a company

The corporate savings rate in Silvaria has been on the decline since 2009. Past data suggest that when the corporate savings rate declines, so does the unemployment rate. Clearly, reducing the corporate savings rate is one way to address the current unemployment crisis in Silvaria.

This argument is most vulnerable to criticism on which of the following grounds?

Senate committee member: Public internet usage has increased by more than 100 percent in the last five years, and building more data centers to handle future increases is not feasible. That is why I propose legislating a strict limit on the amount of data any one person can use and implementing that policy nationwide.

The senate committee member’s proposal assumes which of the following?

Polar bears depend on sea ice, which melts during exceptionally warm weather, for access to food. When warm weather lasts longer than normal, polar bears accumulate fat—energy stored for their long winter hibernation—more slowly and weigh less, on average, as a result. At the same time, during periods of prolonged cold, polar bears weigh significantly less than they usually do, on average.

Which of the following, if true, does most to explain the contrast described above?

One renewable alternative to gasoline is ethanol fuel made from food crops, such as corn. Because turning corn into ethanol fuel requires intensive, unsustainable use of agricultural land, however, ethanol is no more a renewable resource than are traditional fossil fuels.

Which of the following, if true, most strengthens the argument above?

Many zoologists have taken to studying the DNA of American coyote populations in an attempt to learn more about ancient canid populations, the ancestors of modern dogs. One problem with this pursuit is that American coyote populations have interbred heavily with feral dog populations. Thus, any group of coyotes zoologists decide to study will have significant amounts of dog DNA in its communal genome.

Which of the following, if true, would most weaken the criticism made above of the zoologists’ pursuit?

Plan: As part of its Healthy Students Initiative, Happy Meadows Elementary School decided two years ago to raise its school lunch budget by 20 percent in order to serve healthier food to its students. Result: The nutritional quality of Happy Meadows’ school lunches is no better now than it was two years ago. Further information: the annual rate of inflation since the budget change has been below 4 percent, and all of the money budgeted for lunches has been received by the school cafeteria.

In light of the further information, which of the following, if true, would best explain the result that followed from the implementation of the plan?