Answer:
Option C: A female actor who wears very revealing clothing and has no name or lines of dialogue in a movie.
Explanation:
If we think about it based on definition,
Objectification basically means treating a person as a commodity and Sexual objectification is basically treating a person as a mere object of sexual desire.
The actress in option C is just there to wear revealing clothing and not anything else, treating her as in object of sexual desire.
Where as the rest are all doing something that makes them not objectified, they may have names and dialogue where it's specific option C, does not.