The "biggest" of the big five personality traits (those that have the largest influences on people's behavior) are neuroticism and

A) extraversion.
B) agreeableness.
C) conscientiousness.
D) openness to experience.

Neuroticism and extraversion are considered the "biggest" of the big five personality traits because they have the largest influences on people's behavior. Neuroticism relates to emotional instability and anxiety while extraversion relates to sociability and assertiveness. Agreeableness, conscientiousness, and openness to experience are also important traits, but they do not have as significant an impact on behavior as neuroticism and extraversion.