Which of the following is the best definition for agriculture? Select one:

a. Agriculture refers to the trading of crops, livestock or poultry for the purpose of meeting man’s needs

b. Agriculture refers to the production of only livestock or poultry for the purpose of meeting man’s need.

c. Agriculture refers to the production of crops, livestock or poultry for the purpose of meeting man’s need.

d. Agriculture refers to the production of only crops for the purpose of meeting man’s need.