Answer:
c) the average tax rate decreases as the size of the tax base increases.
Explanation:
A regressive tax is a tax imposed in such a manner that the tax rate decreases as the amount subject to taxation increases.
"Regressive" describes a distribution effect on income or expenditure, referring to the way the rate progresses from high to low, so that the average tax rate exceeds the marginal tax rate.
Regressive" describes a distribution effect on income or expenditure, referring to the way the rate progresses from high to low, so that the average tax rate exceeds the marginal tax rate.