Answer:
The correct answer is option c: cancer.
Step-by-step explanation:
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Environmental stressors cause anxiety and stress in the individual.
We analyze each of the options:
a: blinking lights: they are a stressful environment
b: heavy traffic: environmental stressful
c: cancer: it is a disease so it is not an environmental stressor
d: loud noises: environmental stressful.
We conclude that the correct answer is option c: cancer.