What number of college students are nondrinkers?

I believe the answer is: 1in5  or 20%

This number represent the students who abstain from alcohol from both principle or health concerns. They either see that drinking would definitely disturb their ability to properly pursue their education or would not want to touch alcohol due to the health risk that it might cause in the future.

answer; /// i believe that the correct answer is(

answer; implicit memories explicit;