Answer: c: the contract last for the rest of their life
Step-by-step explanation:
Indentured servants were people who got passage to the colonies in exchange for a number of years of service. The person they would be indentured to would feed them and shelter them until these years of service elapsed and would sometimes give them some form of support to start their own venture.
Indentured servants could be bought, sold or even inherited while their contract was still in effect which made them a bit like enslaved people with the difference being that they would not be indentured for life.