1. Draw a demand curve and a marginal cost curve for having children. Indicate the influence of each of the following on the graph and label shifted curves with the letter of the associated question part. In each case explain the resulting effect on the quantity of children.

a) An economy that was primarily agricultural becomes primarily industrial.

b) Employment rates and wages increase for women.

c) Infant mortality rates decrease.

d) The country adopts a system of support for the elderly.