​The disease AIDS is caused by:​

Correct option is C

The correct answer is (C) virus.

AIDS is caused by a virus, the human immunodeficiency virus (HIV).

Explanation: HIV attacks and weakens the immune system by infecting cells that are critical to fighting infections. This can make it difficult to fight off even minor illnesses. It's possible to have HIV without any symptoms.

AIDS: Acquired immunodeficiency syndrome, which occurs when HIV progresses to its most advanced stage. AIDS is a number of potentially life-threatening infections and illnesses that happen when the immune system has been severely damaged by HIV. 

• HIV is spread through: 
• blood, breast milk, semen, vaginal fluids, sharing needles, and pregnancy.
• HIV is not spread by: kisses, hugs, and sharing food. 

HIV can be prevented and treated with antiretroviral therapy (ART): 

• ART: A combination of HIV medicines that reduce the level of HIV in the blood. 
• Benefits: With early diagnosis and effective treatments, most people with HIV will not develop AIDS-related illnesses and will live a near-normal lifespan.