问题详情

The author includes a discussion of the American black bear, Ursus americanus, most likely in order to
A．provide additional support for the unique feeding habits of bears
B．discount the theory regarding a bear"s ability to remain well fed
C．evaluate the dispute between advocates of differing theories regarding bear behavior
D．challenge recent research on the way in which bears secure food
E．suggest further investigation of human interaction with bears请帮忙给出正确答案和分析，谢谢！