David is happy and optimistic. he enjoys being around other people and participating

The correct answer is extroversion.

Extroversion refers to a personality trait that is exhibited as follows by extroverts: preference for being in social settings and interacting with others rather than being alone, enjoying being the center of attention and feeling energized and fulfilled when surrounded by other people. Since David enjoys being around people and participating in activities, he would likely score high in the extroversion measure of the Big 5 personality test.

Same for me but haikyuu is #1 for me