"imagine that you are trying to teach a classroom of personality students how to better remember the material for an exam. what would likely be the best recommendation that you could make? "

I would recommend them as follow:

"Try to build a relationship between the material of the exam and your personality."

Explanation:

As the classroom is of personality students, so it is best approach to teach them that can co-relate with them. In this way, they can learn easily in short time and for long duration.For example, I want to learn that where was a Specific personality born? By using this method, I can learn that specific personality was born in my mother's hometown. In this way, I can learn in short time and for long duration as I have build a connection between the question and myself.

The correct answer is b