Which disease is caused by the body's immune system attacking healthy cells? a. lupus b. cancer c. sickle cell disease d. cardiovascular disease

The answer is A. Lupus.

Explanation:

Lupus is an autoimmune disease, happens when the immune system attacks its tissues, causing inflammation, swelling, pain, and damage. It is a condition in which your immune system mistakenly attacks your body. The immune system normally guards against germs like bacteria and viruses. When it senses these foreign invaders, it sends out an army of fighter cells to attack them.

A

Explanation:

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