What muscle is used to raise your eyebrows for questioning expression?

Raises your eyebrows for a questioning expression?

corrugator supercilii

Occipito-frontails - found at the top of the forehead.

The muscles covering the scalp are commonly known as the epicranial muscles. These muscles include the occipitalis, frontalis, and the temporoparietal muscles. All of the epicranial muscles help in the moving of the eyebrow. However, the occipital part of the epicranial muscles draw the scalp in a backwards motion and the frontalis helps to raise the eyebrow.