In an Investigation of Sphagnum Growth, Researchers Measured the Growth

In an investigation of Sphagnum growth, researchers measured the growth of four different S. fuscum species (labeled a, ab, bc, and c in the figure) at four temperatures. The results of the investigation are represented in the graph. What would you expect to happen to the geographic range of S. fuscum as the average temperatures on Earth rise?

A) The geographic range of S. fuscum will extend southward.
B) The geographic range of S. fuscum will extend northward.
C) The geographic range of S. fuscum will not change.
D) The geographic range of S. fuscum will contract at both the northern and southern ends.