A study claims that drinking 2 liters of water daily improves concentration. Which supports this claim mathematically?
Correct answer: A. A sample group showed a 15% improvement in focus scores after increasing water intake
- A. A sample group showed a 15% improvement in focus scores after increasing water intake
- B. People drink more water in summer
- C. Water is generally healthy
- D. Students enjoy drinking water
Explanation
Option A is correct because it provides a direct statistical correlation between increased water intake and improved focus, which supports the claim mathematically. Option B is incorrect as it merely states a seasonal behavior without linking it to the claim. Option C, while highlighting the general health benefits of water, does not directly support the specific claim about concentration. Option D is irrelevant to the claim as it discusses preference without any evidence of impact on concentration.
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