Question

defined by a finite length with an infinite number of points between two endpoints in one dimension
a circle
b line segment
c parallel lines
d perpendicular lines

Explanation:

A circle is a set of points equidistant from a center. Parallel lines are lines that never meet. Perpendicular lines intersect at a right angle. A line segment has two endpoints and a finite length with infinitely many points between the endpoints.

Answer:

B. line segment