The correct answer is: B. Concave
A concave mirror is a curved mirror that bulges inward at the center. The reflecting surface is on the inside of the curve. Concave mirrors can be used to create real and virtual images, and they can also be used to magnify or reduce objects.
A convex mirror is a curved mirror that bulges outward at the center. The reflecting surface is on the outside of the curve. Convex mirrors always produce virtual images that are upright and reduced in size.
A plane mirror is a flat mirror. Plane mirrors always produce virtual images that are upright and the same size as the object.
A parabolic mirror is a curved mirror that has the shape of a parabola. Parabolic mirrors are used in many different applications, including telescopes, headlights, and radar dishes.
In the case of a shaving mirror, a concave mirror is used because it produces an enlarged image of the face. This allows the user to see more detail when shaving.