Which of the Following Individuals Is Demonstrating Obedience

Which of the following individuals is demonstrating obedience?

A) Katrina, who buys a blue purse like the one all the other girls at school have
B) Kenny, who buys a new set of knives because they looked interesting on a TV commercial
C) Carlos, who washes the dishes and takes out the trash because his mother tells him to
D) Paloma, who orders the girls in her sorority to clean out the refrigerator after a party