Which is true?
a. a change in quantity demanded is a response to a price change and a change in demand is a response to a non-price change
b. a change in demand and a change in quantity demanded both happen in response to price changes
c. both describe a movement along a single demand curve
d. the two terms can be used interchangeably
e. a change in quantity demanded occurs when price increases and a change in demand occur when a price decreases

The correct answer is option A.

Explanation:

A change in quantity demanded occurs because of a change in the price of the product. It is indicated by a movement on the same demand curve. There is an inverse relationship between quantity demanded and price of a product while other factors remain constant. So when price increases, the quantity demanded falls and vice versa.

A change in demand occurs because of a change in other factors while the price of the product remains constant. This is indicated by a shift in the demand curve. The other factors are the price of other goods, tastes, and preferences, the income of the consumer, etc.

explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.

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