The answer is D.
It cannot be A because you can make a line with two points,
It cannot be B because rays consist of a point that infinitely extends in a direction, so it has only one endpoint (not two)
It cannot be C because of the same reason given for B being false except the definition given by C implies there are no endpoints (rays have one)
It must be D by process of elimination, and the definition correctly matches the object of the sentence.
I hope this helps! Good luck with your studies as well, and have a great day.
colemaikell08