This passage is written mainly for the purpose of （ ）.

This passage is written mainly for the purpose of （ ）.

A.

​inspiring its readers to fulfill their expectations through hard work

B.

persuading its readers to be more practical with their personal commitments

C.

informing its readers about the disadvantages of the courses they take online

D.

preparing its readers for the hardships they may encounter in online education

正确答案是D