When total utility remains constant the value of marginal utility is _____________.
Answer & explanation
Correct answer: option 2
The correct answer is option (2) : Zero
When total utility remains constant, the value of marginal utility is zero. This is because marginal utility represents the change in total utility resulting from a one-unit change in the quantity of a good consumed. If total utility is not changing, it means that the additional utility from consuming one more unit is zero.