rect answer is option B. or the impact of price on consumer's purchasing ability and decisions.Explanation:In Microeconomics,the INCOME effects explains the CHANGE in overall consumer for goods and services that is primarily due to any fluctuations in their purchasing power.The purchasing power of the consumers can change because of changes in the real income of the consumers.When the income of the consumers change relative to the commodity/service PRICES or the commodity/service prices change relative to consumer income,the real income of the consumers can change consequently.Due to such effects,the consumer's purchasing power ability and consumption decisions will change.For example,if the consumer income rises but the prices of goods and services remain constant or the prices of goods and services decrease relative to consumer income,the real income increases THEREBY raising consumer's real purchasing power and he or she will purchase more of the normal or luxury goods and services(not the inferior goods and services) and vise VERSA.