Hey there!
So, with domain and range in Algebra 2- you have to be extremely careful and use the endpoints or arrows on the line to your advantage.
If the line has one arrow, you can assume that either the domain or range is going to be continuous after some point so it would go in an infinite way on one side.
However, this line has two closed dots (keep in mind I didn't say open) we know that the line will stay on the graph just as is. So, with the domain and the range, you know that both will need a stopping point and a starting point for the domain and the range.
The only answer choice that does that is E.
E is the answer.
I hope this helps!
~kaikers