Answer:
The correct answer is option b.
Step-by-step explanation:
The marginal utility is the utility derived from the consumption of each additional unit of the good.
The diminishing marginal utility means the decline in the marginal utility derives from the consumption of a good with each additional unit of good consumed.
It has been observed that as an individual consumes a good the utility or satisfaction derived from the consumption of each unit is lower than the previous unit.