Question

1. cancer may result from __________

a) poor nutrition
b) viral invasion
c) uncontrolled cell division caused by mutations
d) lack of exercise
answer: __________

Explanation:

Cancer is fundamentally caused by mutations that lead to uncontrolled cell division. Poor nutrition (a) and lack of exercise (d) are risk factors but not direct causes. Viral invasion (b) can contribute to some cancers but is not the core cause. The key cause is mutations causing uncontrolled cell division (c).

Answer:

c) Uncontrolled cell division caused by mutations