southern plantation owners in the colonial era could not depend on using indentured servants for labor because
a)there was no reason for them to come to the colonies.
b)there was an uncertain supply of workers.
c)the workers knew they would never be free.
d)the workers would not be able to become property owners.

B. There was an uncertain supply of workers.

Explanation:

Indentured servants (people who worked for X amount of years under a contract) would be free after their contract was up. The number of workers was always unstable, and that's when slavery began.

Sorry that this is late!

answer: they’re different

explanation: different people

your answer is a hope this