Which Big Five trait reflects dependable, organized, reliable, ambitious, hardworking, and persevering?

• A. Openness
• B. Agreeableness
• C. Conscientiousness
• D. Extroversion

Answer: (C)

The main idea here is how the Big Five trait of personality relates to reliability and self-discipline. The description—dependable, organized, reliable, ambitious, hardworking, and persevering—best matches conscientiousness. This trait is all about being diligent, organized, and goal-directed; people high in conscientiousness tend to plan ahead, follow through on commitments, and persist toward long-term aims, which lines up exactly with being hardworking and persevering.

Openness is about being imaginative and curious, Agreeableness about being warm and cooperative, and Extroversion about sociability and energy in social settings. Those other traits describe different ways a person interacts with the world, not the consistent, disciplined behavioral pattern implied by conscientiousness.