Final answer:
Azidothymidine (AZT) is the drug used to treat patients with HIV. It controls the progression of disease but is not a cure. Penicillin, Insulin, and Aspirin have different applications. Option 3 is correct.
Step-by-step explanation:
Among the options provided, Azidothymidine (AZT) is the drug used to treat patients with HIV. AZT is a type of antiretroviral medication that works by blocking the virus's ability to replicate, thus controlling the disease's progression. It's important to note that while AZT can manage the symptoms and delay the progression of the disease, it is not a cure for HIV. Other drugs, like Penicillin, Insulin, and Aspirin, have different applications. Penicillin is an antibiotic for bacterial infections, Insulin is for diabetes control, and Aspirin is a pain reliever and helps in preventing blood clots.
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