Geometry

The correct answer is: A.A line segment has two endpoints, while a ray has one endpoint and extends infinitely in one direction.

Here's a detailed analysis of why the other options are incorrect:

B.A line segment extends infinitely in both directions, while a ray has two endpoints. This is incorrect. A line (not a line segment) extends infinitely in both directions. A line segment has two endpoints and is of a finite length. A ray has one endpoint and extends infinitely in one direction, not two endpoints.

...