Which of the Following Activities Is Most Likely to Be

Which of the following activities is most likely to be counted in GDP?

A) Fran volunteers at the local veteran's hospital twice a month.
B) Stu gave $5 to a homeless man he met in the park.
C) Gail buys paper and crayons to donate to poor children in need of school supplies.
D) Bud works hard five hours each week to make sure that his lawn always looks nice.