HIV is thought to have originated from   *2 pointsBirdsMosquitosChimpanzeesNone of the above

HIV is thought to have originated from Chimpanzees.

Here's a brief explanation:

1. HIV (Human Immunodeficiency Virus) is a type of virus that attacks the immune system, the body's natural defense system.

2. The most widely accepted theory is that of the 'hunter'. In this scenario, SIVcpz was transferred to humans as a result of chimps being killed and eaten, or their blood getting into cuts or wounds on the human.

3. Studies of some natural history collections show that the first known case of HIV in a human dates back to the 1920s in Kinshasa in the Democratic Republic of Congo.

4. It's believed that the same virus was transferred to chimpanzees to humans, and mutated into HIV when humans hunted these chimpanzees for meat and came into contact with their infected blood.

5. Over decades, the virus slowly spread across Africa and later into other parts of the world.

So, the correct answer is Chimpanzees.