Which of the following is true of agreeableness?
a. It is the number of things a person can effectively work on at one time.
b. It allows people to have broad interests and to be curious, imaginative, and creative.
c. It is the extent to which a person is poised, calm, resilient, and secure.
d. It causes some people to be gentle, cooperative, and good-natured in their dealings with others.