Smoking affects health.
Explanation:
- Kills: This verb means to cause death, but it doesn't fully capture the idea of the broader impact of smoking on health.
- Rejects: This verb means to refuse to accept or consider, which doesn't fit the context of the sentence about the impact of smoking on health.
- Effects: This noun refers to the results or consequences of an action, but the sentence requires a verb to convey the relationship between smoking and health.
- Affects: This verb means to influence or have an impact on something, which accurately conveys the idea that smoking has a negative impact on health.
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