Answer: D. ray SE
Step-by-step explanation:
In the given figure, S(sun) is the starting point and is the only end point then it is running in a particular direction , to infinity.
Thus, It is a ray and name as ray SE.
Thus D is the right option.
A ray starts at a fixed point and goes off in a particular direction, to infinity. The point where the ray starts is called the endpoint. On its way to infinity it may pass through one or more other points.
