Concept:Marginal utility is the extra satisfaction gained from consuming one additional unit of a commodity.
Explanation:The price a consumer is willing to pay depends on the marginal utility of the last unit consumed.
When marginal utility is high, the consumer values that extra unit greatly.
Hence the consumer will be ready to pay a higher market price for it.
This is consistent with the law of diminishing marginal utility because lower marginal utility is associated with lower willingness to pay.
High marginal utility does not mean zero, stable, or constant price.
Therefore, the market price of such a commodity will be high.
Answer:B. high