Question

which best describes the surface of a concave mirror?
it is flat.
it is textured.
it curves outward.
it curves inward.

Explanation:

A concave mirror has a surface that curves inward. This is in contrast to a convex mirror (which curves outward), a flat mirror (which is flat), and a textured surface is not a defining characteristic of a concave mirror. The key property of a concave mirror is its inward - curving reflective surface.

Answer:

It curves inward.