The flu virus can be found on surfaces, such as tabletops and doorknobs, that have made contact with an infected individual's nasal secretions. Salmonella is a bacteria that can be found in food, where it can cause food poisoning. Fungi can live in many different environments, including locker rooms, where they can cause athlete's foot or ringworm.

Based on this information, it is possible to conclude that
A.
humans are constantly interacting with other organisms that can cause disease.
B.
humans should avoid receiving vaccinations to prevent disease.
C.
disease-causing organisms are more likely to be present in food than anywhere else.
D.
there are no substances available that can kill disease-causing organisms.

1 answer

A. humans are constantly interacting with other organisms that can cause disease.