Indicate how each of the following activities will affect this year’s GDP: 

a. The sale of a used economics textbook to the college bookstore 

b. Smith’s $500 doctor bill for setting her son’s broken arm 

c. Family lawn services provided by Smith’s 16-year-old child 

d. Lawn services purchased by Smith from the neighbor’s 16-year-old child who has a lawn-mowing business 

e. A $5,250 purchase of 100 shares of stock at $50 per share plus the sales commission of $250 

f. A multibillion-dollar discovery of natural gas in Oklahoma 

g. A hurricane that causes $10 billion of damage in Florida 

h. $60,000 of income earned by an American college professor teaching in England.