Which benefit occurs first after someone quits smoking?

Blood oxygen levels return to normal.

The risk of stroke returns to normal.

The senses of taste and smell return to normal.

Lung function improves.

Blood oxygen level returns to normal

Explanation:

There is an improvement in blood circulation within 2-12 weeks of stopping. Making physical activity a lot easier and lowers the risk of heart attack.

answer; /// i believe its (643,000) every year;

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