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

## Step 1<br />A concave mirror is a type of mirror that has a surface that curves inward. This is the defining characteristic of a concave mirror.<br />## Step 2<br />The term "concave" is used to describe something that curves inward. In the context of mirrors, this means that the mirror's surface curves inward, like the inside of a bowl.<br />## Step 3<br />The other options provided do not accurately describe the surface of a concave mirror. A flat mirror has a flat surface, a textured mirror has a surface with a rough texture, and a convex mirror has a surface that curves outward.