Answer:
(b) 0 < y < ∞
Step-by-step explanation:
The range is the vertical extent of the graph.
The arrow at the top of the curve indicates it extends to infinity in that direction (upward).
The horizontal asymptote at y=0 indicates the graph does not go as low as y=0, but stays above that value.
The vertical extent of the exponential function on the graph is ...
0 < y < ∞