Why Did the Publication of Darwin's the Origin of Species

Why did the publication of Darwin's The Origin of Species stimulate interest in development?

A) People hoped to influence the direction of future human evolution.
B) People thought this study would prove that humans are not related to other animals.
C) People came to view children as imperfect adults who, without intervention, would behave like lower animals.
D) People thought that in studying children, they would see how human beings might have evolved from lower animals.