Answer:
B) influenza
Explanation:
Influenza is the infection caused by the virus which affects the respiratory organs including the throat, the lungs, and the nose. The influenza is characterized by the high fever, headache, nasal congestion, muscle ache, and sore throat.
In the given question, since the person who visited Africa after returning showed the symptoms similar to the symptoms of the influenza, therefore, influenza is the correct answer.
Thus, influenza is the correct answer.
