What evidence lends support to the hypothesis that in a species, males generally have lower immunotolerance than females?
A) Males die younger.
B) When males are treated with testosterone implants, a decrease in immunotolerance is observed.
C) When males are treated with cholesterol implants, an increase in immunotolerance is observed.
D) The slower the maturity rate, the lower the immunotolerance.
Answer: B
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