Answer:
c. has decreasing slope and a person is risk averse.
Step-by-step explanation:
The marignal utility of wealth represent that the subsequent utility of the person wealth is not perceived as necessary/joyful as the previous one.
This makes the slope of the utility function to go upward but at slower grow.
The first units of wealth produce a great improvement in utlity compared with the followings just like in any other good or service provided in the economy.