问题详情

Why does the professor mention the drawing by Leonardo da Vinci？
A．She wants the students to refer to their textbook more often.
B．She uses it as an example of the union of art and science.
C．She says that it is one of her personal favorites.
D．She contrasts his work with that of other artists.请帮忙给出正确答案和分析，谢谢！