Final answer:
(B) Extroversion, characterized by sociability and assertiveness, is the personality trait most likely to correlate with success in a pharmaceutical sales role, due to the high level of interaction with clients and the need for building relationships.
Step-by-step explanation:
The personality trait most likely to correlate with Mike Simmons's success as a pharmaceutical sales representative is extroversion. Extroversion is characterized by sociability, assertiveness, excitement-seeking, and emotional expression.
People with high levels of extroversion tend to be outgoing and warm, which is crucial for building relationships in sales.
Although other traits such as conscientiousness which involves goal-directed behavior and dependability, and agreeableness, which focuses on being pleasant and cooperative, can also contribute to job success, extroversion's elements of sociability and assertiveness are primary to sales roles where interaction with others is constant and essential.