Which describes the effect of the purchases that consumers make?
a. provide jobs for distributors
b. increase producers costs
c. indicate their desires to producers
d. are not taxed in a free-market system

Option # C:

Explanation:

When a consumer purchases a product it provides the producer with information about customers preferences which in turn can be used to produce new line of auxiliary products catering to the customer's needs. This may ensure the satisfaction of customer and thereby a long term engagement between them. Thus option C is the most direct effect of purchasing the product.

answer; ///biological psychologists;