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.
8. According to Figure 1, of the following months, during which one did the 13-lined ground squirrel spend the most time in periods of torpor?
Your Answer is
Correct Answer is H
Explanation
According to Figure 1, it can be seen that the period of torpor appears from mid-September until the end of March. Only H February is in this range in the options, and G September is only half a month, so it is excluded