What specific kind of pathogen is HIV? •a bacteria called an antibacteria
•a parasite called an anti parasite
•a virus called a provirus
•a virus called a retrovirus

a virus called a provirus

Explanation:

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answer; i believe that the correct answer is ; ///(muscle adaptation principe);

answer; /// i believe that the correct answer is (c); ///when the lungs expand, they fill with air from the atmosphere;