State true or false and justify your answer:

A shift of the curve means that the curve moves only left or right.

The given statement is true.

Explanation:

A shift of the curve means a rightward or leftward shift in the curve. A change in a factor other than price results in a shift in the demand or supply curves. It means as the price of input rises, the supply decreases or shifts leftward and as the price of an input falls, the supply increases or shifts rightward.