Cancer is more common in older people because
A. their immune system have degenerated
B. the supply of certain hormones declines with age
C. their bodies are unable to adjust to the changing environment
D. they have accumulated more mutations
Answer: Option D
Related Questions on Human Diseases
Which one of the following is useful in the treatment of scurvy disease?
A. Mango
B. Papaya
C. Aonia
D. Ber

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