The answer is C. ray.
1. Analyze each option based on geometric definitions:
A.A point is a location in space with no size or dimension, usually represented by a dot. It has no length, width, or height, so it doesn't match .
B.A segment (line - segment) is a part of a line that has two endpoints and is denoted as , not .
C.A ray is a part of a line that has one endpoint and extends infinitely in one direction. The notation indicates that