Geometry

The answer is C.line.

1. Recall the definitions of the geometric terms:

Ray: A ray starts at a point (the endpoint) and extends infinitely in one - direction. It is named by its endpoint first and then another point on the ray.

Point: A point is a location in space. It has no size, just a position, and is usually represented by a dot. In the given figure, $M$ and $N$ are points.

Line: A line extends infinitely in both directions. It can be n...