Question

what is one reason why some people might seem better at fighting infections than others?
a they take a lot of nutritional supplements.
b they have been primed through early exposure to bugs and vaccinations.
c they have a stronger immune system due to their genetic makeup.
d they never experience stress.

Explanation:

Genetic makeup can significantly influence the strength and efficiency of the immune - system. While supplements, early exposure, and low - stress levels can help, genetic factors play a fundamental role in immune function.

Answer:

C. They have a stronger immune system due to their genetic makeup.