Which of the Following Best Demonstrates the Situationist Perspective of Personality

Which of the following best demonstrates the situationist perspective of personality?

A) Diego volunteers at a homeless centre three times a week because he finds it rewarding.
B) Guillem volunteers at a homeless centre three times a week because he is very high on the trait of agreeableness.
C) Julian volunteers at a homeless shelter three times a week because he fears becoming homeless himself.
D) Damian volunteers at a homeless shelter three times a week because, as a child, his parents took him with them when they volunteered at a homeless shelter.