An apprenticeship program is:
a. a voluntary association that provides a wealth of networking opportunities.
b. a chance to earn college credit while you learn a skilled profession.
c. a training program in which you earn wages while you learn a skilled profession.
d. a chance to earn high school credit while you learn a skilled profession.

C. A training program in which you earn wages while you learn a skilled profession.

Explanation:

It is a system by which young people are trained into the work, especially in the technical staff like mechanics, electricians, etc. The apprenticeship program mixed work in a company with classroom training, with these both pieces of training the workers learned the things needed to be productive.

I hope this answer helps you.