The parents of 14-year-old Ignacio call him the mayor of the neighborhood because he knows almost everyone by name. He enjoys talking with friends and strangers and doesn't mind hearing about their problems. Which of the "big five" personality dimensions is Ignacio showing?
A. conscientiousness and openness to experience
B. extraversion and agreeableness
C. neuroticism and conscientiousness
D. agreeableness and neuroticism