Which of the following statements is true of the immune system?
A. When a person is under stress, the levels of bacteria and viruses drop dramatically.
B. Its machinery consists of billions of red blood cells.
C. Lower levels of natural killer (NK) cells in stressful situations indicate a weakened immune system.
D. Stress increases the number of natural killer (NK) cells in the body.
Answer: C
Psychology
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Deductive reasoning is also referred to as
top-down reasoning. theoretical reasoning. concrete reasoning. reductive reasoning.
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Sociobiologists state that males are likely to be choosy in their choice of sexual partners
Indicate whether this statement is true or false.
Psychology