Achange in quantity supplied: a is represented by a movement along the supply curve. b happens only when the price decreases. c happens only when the price increases. d is represented by a shift in the supply curve. e is positive if the price of the good decreases.

a movement along the supply curve

Explanation:

Movement along a supply curve represents the variation in quantity supplied of the commodity with a change in its price and other factors remaining unchanged

A) movement down the supply curve.

Explanation:

A decrerase in quantity represents movement along the demand curve with changes in price. This means the quantity goes up as ther price comes done. Therefore, this is a movement along the demand curve.

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a

explanation:

answercold,maybe nuclear war;