Hey there! I'm happy to help!
Note that this is not a function because some inputs can have more than one output, that's why they say relation, not function! :D
DOMAIN
The domain is all of the possible x-values of the relation. We see that the lowest x-value is -4, while the highest is 4. If you plug in these two or any number in between, there will be at least one corresponding output.
This domain can be written as -4 ≤ x ≤ 4.
RANGE
The range is all of the possible outputs or y-values. We see that the minimum y-value is -4 and that the highest is 4. Therefore, we will just write it the same as the domain but use a different variable.
-4 ≤ y ≤ 4.
This matches with Option A.
I hope that this helps! Have a wonderful day!