Question

consider this claim:
for the benefit of all citizens, fluoride should be added to drinking water.
which is the strongest evidence to support the claim?
some experts say that the fluoridation of water may threaten people who
suffer from kidney disease.

many experts agree that the fluoridation of water helps to prevent tooth
decay.

more than half of americans have fluoride in their drinking water.

Explanation:

To support the claim that fluoride should be added to drinking water for citizens' benefit, we analyze each option:

• The first option presents a potential harm to a specific group (those with kidney disease), which weakens the claim rather than supports it.
• The second option states that many experts agree fluoridation helps prevent tooth decay. Preventing tooth decay is a health benefit for citizens, so this provides strong evidence for the claim.
• The third option only tells us about the prevalence of fluoride in American drinking water, not about its benefits, so it doesn't support the claim.

Answer:

B. Many experts agree that the fluoridation of water helps to prevent tooth decay.