Charles Darwin's theory that men descended from apes was met with both favorable and unfavorable opinions. Although some readers liked Darwin's ideas, the religious leaders and scientists of his time did not approve of his research.

This example shows that
A. the church and its scientists did not approve of any type of science or research study.
B. very little scientific research was done in Darwin's time.
C. Darwin was not a good scientist, and his theories were wrong.
D. many science innovators experience difficulties as they attempt to break through accepted ideas of their time.