Exchange is necessary in an economy if:

A) output is to be produced.
B) output is to be consumed.
C) individuals are self-sufficient.
D) families are self-sufficient.
E) labor is specialized.

Specialized Labor

Workforce that has a high level of expertise, training, or education in specific fields or occupations, enabling them to perform tasks more efficiently.

Self-Sufficient

The ability of an individual or economy to meet all their needs without external assistance.

Exchange

The act of giving one thing and receiving another in return, often referring to the trading of goods, services, or currencies.