Question

which of the following is a pathogen?
arthritis
alligator gars
mosquitoes
cancer
influenza virus

Explanation:

A pathogen is a microorganism that can cause disease. Arthritis is a condition, alligator gars are fish, mosquitoes are vectors, cancer is a non - infectious disease. The influenza virus is a microorganism that can cause the flu, which is a disease.

Answer:

E. influenza virus