Correct Answer: C
Explanation:
Meaning: The meaning of surreptitious is something that is done in secret or that is kept quiet.
When someone behaves in a surreptitious way, they're being secretive.
Example: They were surreptitious about how they organized the surprise party.
Synonyms: Clandestine, Covert, Furtive, Unauthorized, Hidden
Antonyms: Forthright, Open, Honest, Truthful