题目选项分析

Advertisement: Clark brand-name parts are made for cars manufactured in this country. They satisfy all of our government automotive test-the toughest such tests in the world. With foreign-made parts, you never know which might be reliable and which are cheap look-alikes that are poorly constructed and liable to cost you hundreds of dollars in repairs. Therefore, be smart and insist on brand-name parts by Clark for your car.

The argument requires the assumption that

【选项】if parts are made for cars manufactured in our country, they are not poorly constructed