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If the quantity demanded of sunglasses decreases by 2% when average incomes fall by 10%, then we know that sunglasses are a) an inferior good. b) a normal good. c) a Giffen good. d) perfectly elastic.

Answer :

Martebigo

There are different kinds of goods. If the quantity demanded of sunglasses decreases, it shows it is a normal goods.  

What is income Elasticity Of Demand?

Note that all good or service has a particular Income Elasticity Of Demand that can often change over time. The Income Elasticity Of Demand is known to be how sensitive the quantity demanded for a specific good is due to the changes in income levels.

A normal good is known to be a  good that undergo an increase in its demand as a result f an increase in consumers' income. Examples are; clothing, household appliances, etc.

Learn more about  normal goods from

https://brainly.com/question/14421171

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