Answer: A. Regular participation in physical activity reduces the risk of developing various diseases.
The answer is Aerobic exercise (such as swimming, running, climbing)
BrAiNlIeST
Rhumetoid Arthritis: chronic arthritis. swollen and stiff joints, can be crippling, classified as an autoimmune disease.
Osteoarthritis: caused by joint degeneration (the destruction of cartilage) resulting in bone rubbing against bone.
I'm not sure which one of this it is, but the answer is a form of arthritis