Please explain the following:

1.One way fiscal policy affects aggregate demand is:

Multiple Choice

a. directly through government spending.

b. directly through tariffs.

c. directly through taxation.

d. All of these are true.

2.Comparative advantage is the ability to produce:

Multiple Choice

a. more of a good than others with a given amount of resources.

b.relatively more than any other good with a given amount of resources.

c. a good or service at a lower opportunity cost than others.

d. more of a good at a lower cost.

3.A country with plenty of capital and little land may have a comparative advantage in:

Multiple Choice

a. land-intensive activities.

b. capital-intensive activities.

c. labor-intensive activities.

d. technology-intensive activities.

Thank you