A key determinant of the price elasticity of supply is the a. extent to which buyers alter their quantities demanded in response to changes in prices. b. number of close substitutes for the good in question. c. extent to which buyers alter their quantities demanded in response to changes in their incomes. d. length of the time period.

d. length of the time period.

Explanation:

The price elasticity of the supply measures the percentage change in the quantity supplied with the percentage change in price

In arithmetically,

The price elasticity of the supply = (percentage change in the quantity supplied ÷ percentage change in price)

It  indicates a direct relationship between the quantity supplied and the price.

Moreover, the key determinant of the price elasticity of supply is time period

the u.s. census bureau produces data on the population and economy nationwide. it can you to analyze the kind of people living in your neighborhood. it does not show you the market of people willing to buy your product or an existing market for your product. that will require more market research. the census bureau only gives you an insight to the demographics in your area.

its kinda hard to answer this when we dont have all the information that we need.