Passage II
When a 13-lined ground squirrel (a mammal) hibernates, it does not eat, and it alternates between periods of torpor (characterized by a reduced rate of metabolism, low body temperature, and little movement) and active bouts (characterized by a normal rate of metabolism, normal body temperature, and normal movement). Figure 1 shows the body temperature of a 13-lined ground squirrel during 12 consecutive months, including several months of hibernation. Figure 2 shows the average total blood cholesterol of a group of 13-lined ground squirrels at various times during the same 12 months.
Figures adapted from Jessica P. Otis et al., "Cholesterol and Lipoprotein Dynamics in a Hibernating Mammal."@2011 by Otis et al.
11. Based on Figure 1, approximately what percent of the 12 months did the 13-lined ground squirrel spend in hibernation?
Your Answer is
Correct Answer is C
Explanation
According to Figure 1, it can be seen that the hibernation period lasts from mid-September to the end of March next year, basically about 6 months, so C (55% of the time in a year) is the closest