For most products, purchases tend to fall with decreases in consumers' incomes. such products are known as r:
a. inferior goods.
b. direct goods.
c. average goods.
d. normal goods.

Normal goods.

Explanation:

Normal goods are generally have positive income elasticity of demand. This states that there is a positive relationship between the demand for normal goods and income level of the consumers.

Suppose the income of a consumer decreases as a result the demand for normal goods also decreases and if the income of a consumer increases then as a result the demand for normal goods increases.

Therefore, such products are normal goods.

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