Synonym of PREEN

Answer: Option B

Redeem : compensate for the faults or bad aspects of.
Groom : brush and clean the coat of (a horse, dog, or other animal).
Ponder : think about (something) carefully, especially before making a decision or reaching a conclusion.
Prick : make a small hole in (something) with a sharp point; pierce slightly.
Preen : (of a bird) tidy and clean its feathers with its beak.

Synonym of Preen is Groom