raygantt
contestada

What is supply and demand?
A. An economic idea that the value of a product is determined by
how much of it exists in relation to how much people want to buy
it
B. An advertising principle that the number of people who buy a
product is directly proportional to how many public figures
endorse it
C. An economic principle supporting the idea that wealth should be
shared evenly
D. An advertising scheme in which advertisers give products away so
that other customers will want to buy them