Answer:
The correct answer is option D.
Explanation:
HIV is the human immunodeficiency virus. It attacks the immune system of an individual by killing the lymphocytes or white blood cells that are the soldiers against any infection.
Early symptoms include diseases or conditions that arise due to the low immune system of the individual that includes fever, rashes, headaches, coughing, and flu-like experience.
Due to such normal flu-like symptoms, people think that it is flu and do not perform a blood test for HIV.
Thus, the correct answer is - option D.