Answer:
The correct answer option is B. both a function and a relation.
Explanation:
From the given graph, we can see that for each input we have an output.
It means that we have a function because each element in the domain is matched with exactly one element in the range.
And it is also a relation since each input related to the out put in some way.
Therefore, the correct answer option is B. both a function and a relation,