The compound words defined here all appear in "Everyday Use." Which of the words is an exocentric compound?

O a dimwits: people who are not very clever
O b eyelids: folds of flesh that cover the front of the eyeballs
O c backstage: the area behind the part of a stage that the audience can see
O d nightgown: dress-like garment worn at night

c backstage: the area behind the part of a stage that the audience can see

This is an example of an exocentric compound because the meaning of the compound word is not dependent on one of its components. In this case, "backstage" does not refer to a specific type of stage, but rather to the area behind the part of a stage that the audience can see.