Answer:
C) luxury item, an increase
Explanation:
Price elasticity of demand measures the responsiveness of quantity demanded to changes in price.
An elastic demand means a small change in price leads to a greater change in quantity demanded.
A luxury good is a good that isn't a necessity. They are usually bought as a status symbol.
Luxury goods usually have elastic demands.
Emeralds are luxury goods and if there's a fall in price of emeralds the quantity demanded of emeralds would rise.
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