Viewing childhood development as a scientific investigation throws light on how children learn, but it also offers an inspiring look at science and scientists. Why do young children and scientists seem to be so much alike? Psychologists have suggested that science as an effort — the desire to explore, explain, and understand our world — is simply something that comes from our babyhood. Perhaps evolution provided human babies with curiosity and a natural drive to explain their worlds, and adult scientists simply make use of the same drive that served them as children. The same cognitive (认知的) systems that make young children feel good about figuring something out may have been adopted by adult scientists. As some psychologists put it, “It is not that children are little scientists but that scientists are big children.”
What is the main idea of the last paragraph?

A．The world may be more clearly explained through children’s play.

B．Studying babies’ play may lead to a better understanding of science.

C．Children may have greater ability to figure out things than scientists.

D．One’s drive for scientific research may become stronger as he grows.