A charity gives free mosquito nets to poor families. The value added in this case is:

a.

negative because the revenue is zero, but costs are positive.

b.

zero because the poor families do not pay for the mosquito nets.

c.

benefits of the mosquito nets to the families

d.

benefits of the mosquito nets to the families minus the cost of making the mosquito nets

An increase in minimum wage will decrease the:

a.

supply of workers.

b.

quantity supplied of workers.

c.

rate of unemployment.

d.

demand for workers.