A doctor identifies symptoms of nasal congestion, headache, sore throat, hoarseness, cough in a patient. The conclusion is that the patient is infected by a pathogen.

The correct option is B Rhino virus

• Rhinoviruses cause upper respiratory tract infections, but may also infect the lower respiratory tract. RVs are the most common cause of the common cold.
• Adenoviruses are a group of viruses that can infect the membranes of the respiratory tract, eyes, intestines, urinary tract, and nervous system.
• Malaria is caused by Plasmodium parasites.
• Salmonella infection is a common bacterial disease that affects the intestinal tract.
• So, the correct answer is option B.