The correct answer is agreeableness.
According to McCrae & Costa's theory of the big five factors of personality, humans possess five primary trait dimensions ("supertraits") that they score either high or low on. Agreeableness refers to one of the five supertraits. Agreeableness refers to how cooperative, helpful, trusting easygoing and warm an individual is. A person high in agreeableness is friendly and helpful to those around him or her.
