Which is the best definition of sunken relief?

Question

Responses

a carving in which the background is lower than the main figures

a carving in which the background is lower than the main figures

an in-the-round carving of a figure against a sunken background

an in-the-round carving of a figure against a sunken background

a carving in which main figures are lower than the background

Answer 1

The best definition of sunken relief is:

a carving in which main figures are lower than the background.