Answer: C. a path through space.
Step-by-step explanation:
The line, together with the point is a basic element of geometry. In fact, one of its definitions is:
<em>"A line is the path of a moving point".
</em>
In other words, a line is composed by infinite continuous points that extend indefinitely in any of its directions and is a one-dimensional figure.
In addition, <u>a line has length but not thickness.</u>