题目选项分析

Evidence of some shifts in the character of violence on television is emerging from a new study of 500 television programs, a study underwritten by a number of educational institutions and conducted by the Center for Media and Public Affairs, a nonprofit research center in Washington, D.C.

Evidence of some shifts in the character of violence on television is emerging from a new study of 500 television programs by the Center for Media and Public Affairs, a nonprofit research center in Washington, D.C., and it is underwritten by a number of educational institutions