Answer:
b
Explanation:
the range is the interval or set of all valid y (function result) values.
so, look at the graph. what y-values are used ?
I see as maximum +1 and as minimum -3.
then - the endpoints are filled. that means that the endpoints are included in the range, and we use the "<=" or ">=" symbols.
so, y is greater or equal to -3, and it is smaller or equal to +1.
therefore, b is the correct answer.