Passage I
In a study of fur pigmentation in deer mice, Peromyscus polionotus, scientists compared the brightness of the fur of mice from populations located different distance directly inland from a coastal site. Figure 1 shows 2 facial regions and the 2 body regions at which the fur of each mouse was evaluated (on a scale from 0 to 1.00) with respect to its brightness. Figure 1 also shows how, for each of the 4 regions, average relative brightness varied with inland distance.
Figure 2 shows how the average brightness of surface soil samples, given as the average percent relative reflectance, varied with inland distance.
3. According to Figure 1, the greatest change in the average relative brightness of the fur on the rostrum occurred between which of the following inland distances?
Your Answer is
Correct Answer is C
Explanation
Looking at the upper left rostrum in figure 1, it is found that the brightness of the vertical coordinate corresponding to the stage of abscissa 50-75 has the largest change in brightness