Answer: Risk averse
Step-by-step explanation:
A person with a diminishing marginal utility of income will derive less utility from income as income increases. A risk averse person is one who would rather avoid risk but still prefers a high income.
Such a person will have a diminishing marginal utility in income because income increases more when there is more risk. A risk averse person does not want that risk and so will go for a lower income which means that they don't want more income as it is riskier to them.