7691. She baffled all our attempts to find her.

✅ The correct answer is option C.
defeated : having been beaten in a battle or other contest.

assist : help (someone), typically by doing a share of the work.

foiled : frustrate the efforts or plans of.

circumvented : find a way around (an obstacle).

baffled : restrain or regulate (a fluid, sound, etc.).

Synonym of baffled is foiled