Antonym of BLEMISH

Answer: Option B

Blemish : a small mark or flaw which spoils the appearance of something.
Preserve : maintain (something) in its original or existing state.
Purify : remove contaminants from.
Defect : a shortcoming, imperfection, or lack.
Tarnish : lose or cause to lose lustre, especially as a result of exposure to air or moisture.

Antonym of Blemish is Purify