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? more than half of americans have fluoride in their drinking water. many experts agree that the fluoridation of water helps to prevent tooth decay. some experts say that the fluoridation of water may threaten people who suffer from kidney disease.

Explanation:

The claim is about the benefit of adding fluoride to drinking - water. Expert agreement that water fluoridation helps prevent tooth decay directly supports the claim as it shows a positive health - related benefit. The fact that more than half of Americans have fluoride in their water is just a statement about prevalence and not evidence of its benefit. The statement about a threat to people with kidney disease is a counter - argument rather than support.

Answer:

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