The answer to your first question is D. Three months. The reason why is it takes at least 3 months to have detectible HIV antibodies. In rare cases, it may take up to 6-12 months.
The second question I'm not 100% positive on but I believe the answer would be B.
Confusing but ok
1. Bronchi
2. Trachea
3. Pharynx
4. Alveoli
5. Larynx
