on the diagram, a movement from a to b represents a\na. movement down the supply curve.\nb. change in…

on the diagram, a movement from a to b represents a\na. movement down the supply curve.\nb. change in quantity supplied.\nc. change in supply.\nd. decrease in supply.
Answer
Brief Explanations:
A movement along the same supply - curve (from A to B in this case) is due to a change in the price of the good, which represents a change in quantity supplied. A change in supply would shift the entire supply curve (like from S1 to S2), not a movement along it. Movement down the supply curve would be in the opposite direction. Decrease in supply is a left - ward shift of the supply curve.
Answer:
B. change in quantity supplied