Your little sister enjoys taking time out of her day to make bead necklaces. A birthday party is coming up and you decide you want to give a necklace to each person at the party. She offers to make a necklace for each of your friends, but for added motivation you give her a dollar for each one she makes. Which of the following is most likely to happen?

a. After the party, your sister will enjoy making beads more than she did before, because you gave her a reward.
b. After the party, your sister will enjoy making beads less than she did before, because you rewarded her for something she already liked to do.
c. Because your sister already enjoys making beads, paying her for making them will have no effect on how much she enjoys the activity.
d. Paying your sister for making the beads will increase her self-awareness.
b. After the party, your sister will enjoy making beads less than she did before, because you rewarded her for something she already liked to do.