Which sentence is an example of a logical appeal?

Nine out of ten teachers think it is a good idea.

Using this will make you more popular at school.

If you don't use this, something bad will happen.

This product will make you look and feel better.

A

Explanation:

B: Using this product will make you popular at school. Will it really? What logic is there in that?

C and D: Bad or good. Feeling good or terrible are all subjective responses. There's no logic here.

A: though very weak, this is the answer. 9/10? Where did you get that from? Still it is a logical argument.