Which of the Following Is the Most Accurate Description of a Migrant

Which of the following is the most accurate description of a migrant farmworker?

A) A person who does farm work as the primary means of employment, although other work may be done when the seasonal work ends
B) A person who immigrates to the United States to "follow the crops" in performing seasonal farm work
C) A person who moves from place to place to earn money performing seasonal agricultural work
D) A person who specializes in the development of rural land for the purpose of farming