WAEC - Economics (2014 - No. 37)
A change in the quantity demanded of a given commodity is determined by the
size of the population
income of the consumer
price of the commodity
taste and fashion
Paliwanag
A movement along a given demand curve caused by a change in demand price. The only factor that can cause a change in quantity demanded is price. A related, but distinct, concept is a change in demand. This change in quantity demanded is caused by a change in the demand price.