Which of the following is an important part of the personal statement?

A. a history of your academic performance

B. résumé

C. a description of your community service experience

D. a focus on a single theme

An important part of a Personal Statement is D - a focus on a single theme.

While the other options listed are valuable in an application process, a personal statement should reflect one particular moment, experience, lesson, etc., and should therefore have one focused theme.