Read the passage.

It starts, obviously, with being the best student that you can be. Now, that doesn’t always mean that you have to have a perfect score on every assignment. It doesn’t mean that you’ve got to get straight As all the time--although that’s not a bad goal to have. It means that you have to stay at it.

The main argument in President Obama's "Back to School" speech is that whether we fall behind or race ahead as a nation is going to depend on the nation's young people.

Which statement best explains how the passage supports the main argument?

A. The passage does not support the main argument because it shows that education will help our nation get ahead in the future.

B. The passage supports the main argument because it shows that a student's education is unimportant.

C. The passage does not support the main argument because it shows that a student's education is unimportant.

D. The passage supports the main argument because it shows that education will help our nation get ahead in the future.