Final answer:
Antifever medications are designed to reduce fever in individuals with rhinovirus infections, not to affect monocyte counts or antibody levels.
Step-by-step explanation:
The question asks about the effects of taking antifever medications versus a placebo in study subjects with rhinovirus infections. The correct answer is that antifever medications are expected to reduce fever. Antifever medications typically work by reducing inflammation and lowering the body's temperature set point, which consequently reduces fever. Rhinoviruses, the most common cause of the common cold, lead to symptoms including fever due to the body's immune response to infection. However, it's important to note that antifever medications do not cause an increase in blood monocyte counts or anti-rhinovirus antibodies, nor do they increase fever.