Assume that the market for baseballs is in equilibrium. There is a sudden decrease in income throughout the economy. If all else is held constant, we would expect that if baseballs are a(n) good, then the demand curve will shift to the , causing the equilibrium price and quantity to .
a. normal; left; rise
b. normal; right; rise
c. inferior; right; fall
d. normal; left; fall
e. inferior: left; fall

d. normal; left; fall

Explanation:

A shift in the demand curve of a product results from a change in other factors except from price. It results in a change in quantity demanded at all prices.

A shift to the right will result in an increase in quantity demanded at all price levels, while a shift to the left results on a decraese in quantity demanded at all price levels.

This is illustrated in the attached diagram. When there is a sudden decrease in income, it will result in less money available for buying baseball's.

The customer is only willing to buy at a lower price and quantity they can buy also decreases.

In the diagram there is a fall in price from P to P1, and a fall in quantity demanded from Q to Q1

answer; i believe the correct answer is (sales promotion;