Answer:
The correct answer is option a.
Step-by-step explanation:
In the consumption of two commodities, the total utility is maximized when the ratio of marginal utility and price of the product is the same for both the goods.
A person is consuming two goods, peanuts and chips. The individual is able to maximize total utility. If the price of peanuts and chips are equal, this means that the marginal utilities derived from the consumption of these two must be equal.