The Following Questions Refer to the Evolutionary Tree in Figure

Multiple Choice

The following questions refer to the evolutionary tree in Figure 22.4,whose horizontal axis represents time (present time is on the far right) and whose vertical axis represents morphological change.
Figure 22.4
-Which of these five species is the extant (that is,not extinct) species that is most closely related to species X,and why is this so?

A) V;shared a common ancestor with X most recently
B) W;shared a common ancestor with X most recently
C) Y;arose before X
D) Z;shared a common ancestor with X