Question

which of the following is a viral infection that most adults contract 2 to 4 times a year? a. bacterial pneumonia b. strep throat c. influenza d. the common cold

Explanation:

• Bacterial pneumonia is caused by bacteria, not a virus.
• Strep throat is caused by streptococcal bacteria.
• Influenza (flu) is a viral infection, but adults typically get it less frequently than 2 - 4 times a year.
• The common cold is a viral infection (caused by various viruses like rhinoviruses). Adults usually contract it 2 - 4 times a year.

Answer:

D. the common cold