EPPP Psychology

Answer: D - Wear and tear theory, which is a non-genetic theory of aging, suggests that long-term damage and accumulation of unhealthy chemicals (for example) eventually overwhelm the body’s ability to function. Osteoarthritis involves pain and mobility issues related to deteriorated joint functioning. Its direct cause is the wearing away of cartilage, but there is no known specific biological or genetic reason for that to happen, so it is considered to be due to wear and tear over time.