Correct option is D
Identify: To recognize or distinguish something or someone.
Anonymous: without a name or identity.
Antonyms: overlook, ignore, disregard.
Synonyms: recognize, distinguish, spot, detect, discern.
Meaning of the other words:
Spot: to notice or see something.
Overlook: To fail to notice something; to ignore or disregard something intentionally or unintentionally.
Classify: to arrange or categorize something based on certain criteria.