A consumer really wants tickets to a concert, but because the concert is so popular, ticket prices are very high. Which factor best describes this effect on demand?
A:the number of consumers in the market
B:the availability of labor and materials
C:change in price of a substitute good
D:a change in price of a complementary good

every society, in order to meet the needs of it's people, has to answer three basic questions:

- what should we produce?

- how should we produce it?

- for whom should we produce it?

this questions must be answered in order to, option b, aid in production decisions.

every country can't produce everything, no matter how rich their land is. it may be a matter of technology, resources or geographical conditions. so, these three questions must be resolved in order to get the most of the production of each land.

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what is the question you are trying to ask?