Why did slave owners forbid slaves from learning to read and write?

a. educated slaves might refuse to work in the fields.
b. slaves had little time for recreational reading and writing.
c. slaves might try to take their owners' books.
d. ignorant slaves were easier to control.

"Educated slaves might refuse to work in the fields" is the one reason among the choices given in the question due to which the slave owners forbid slaves from learning to read and write. The correct option among all the options that are given in the question is the first option or option "A". I hope the answer helped you.