Concept:Luxury goods have high income elasticity of demand, meaning demand rises significantly when consumers' income rises.
Explanation:Demand for a luxury good is most strongly influenced by the level of consumers' income.
As income increases, consumers spend a larger share of it on luxury items.
Conversely, when income falls, they quickly reduce or stop buying such goods.
This is because luxury goods, such as expensive cars, designer clothes, and holidays, are not essential.
The income elasticity of demand for a luxury good is positive and greater than one, i.e.
Ed>1.
This shows that a change in income produces a more than proportional change in quantity demanded.
Although the price of the good, prices of other goods, and tastes can affect demand, income is the major and distinguishing determinant for luxury goods.
Therefore, the option that correctly answers the question is consumers' income.
Answer:D. the income of consumers