One Obstacle to a Sane Environmental Policy in This Country

One obstacle to a sane environmental policy in this country is that

A) the means of achieving the goals of such a policy are complicated by local considerations, technological problems, and costs.
B) most people give a low priority to environmental protection.
C) environmental politics is largely majoritarian in nature.
D) Congress has been reluctant to become involved in environmental matters.
E) many environmentalists are within government.