Question

1. which of the following diseases can be caused by a variety of different pathogens? influenza common cold pneumonia

Explanation:

The common cold is caused by various viruses (e.g., rhinoviruses, coronaviruses). Influenza is mainly caused by influenza viruses. Pneumonia can be caused by bacteria (e.g., Streptococcus pneumoniae), viruses, or fungi, but it's not as diverse in pathogen types as the common cold in terms of the sheer number of different virus - like agents that cause it.

Answer:

common cold