a ray defines a piece of a line that starts at the endpoint and extends indefinitely in one direction.
Answer: Option D
Step-by-step explanation:
A ray in a mathematics is defined as a line going infinitely extending itself from one end point towards a direction. A ray doesn't have any particular width. It has no measurable length as it keeps on going forward.
The starting point of a ray is called as the endpoint. A ray is categorized by a line starting from a point crossing various points and moving forward which is normally represented by an arrow head. A ray is normally unidirectional