Answer:
line segment
Step-by-step explanation:
1- a ray: it has a start but no end
2- a line segment: it has a start and an end
3- a point: undefined geometric shape that indicates position
4- plane: a flat surface that has no thickness
Now, an un-sharpened pencil has both a start and an end. This matches the description of a line segment.
Therefore, the correct answer is line segment
Hope this helps :)