Please I need your help in the following questions:

Question 8

Vertical equity in the tax system likely requires what kind of taxation?

a- Regressive

b- Minimal

c- Progressive

d- Proportional

Question 9

Tax breaks that do not change the behavior of individuals is known as the ____________, while changes in behavior of individuals due to the policy change is known as the ____________.

a- spending crowd-out, tax subsidy crowd-in

b- tax subsidy crowd-in, spending crowd-out

c- marginal impacts, inframarginal impacts

d- inframarginal impacts, marginal impacts

Question 10

Which consideration is the justification for deducting the cost of business lunches as a deviation from the Haig-Simons comprehensive income definition?

a- cost of earning income considerations

b- imperfect information considerations

c- externality considerations

d- ability-to-pay considerations