What is the difference between a consumer and a producer?

D. A consumer buys or trades to receive a commodity available for sale or exchange
Answer:
The answer would be D.
Explanation:
A consumer buys or trades to receive a commodity and a producer makes a commodity available for sale or exchange.
In simple words we can say that producers produces products and make them available in the market, and consumers consume them by purchasing from the market. Producers get profits on selling the products while consumers consume the final goods produced by the producers without any effort.