Which type of cost occurs when an individual pays for a piano lesson instead of going to a movie?

A) fixed cost

B) marginal cost

C) residual cost

D) opportunity cost

What is the job outlook for a US postal worker? The career is growing and will provide more opportunities over time. The career is growing and will provide fewer opportunities over time.

What are the steps taken by mining company to prevent pollution?

What products or commodities were traded out of East Africa?

Leader of revolution in haiti

The kongo kingdom was founded when

Difference between loan and stock exchange

Infants about 6 to 9 months in age experience crying and fussing when their parents leave and they are left with the baby-sitter. this phenomenon is known as

An organism must purposefully model a behavior in order for others to learn from it. True or false?

Explain how Slavery influence the economy of southern colonies

Survey, November (Voting) Supplement, 2000-2006. According to this chart, people in what age group were least likely to vote in the 2000 presidential election?