While the topical application of fluoride to children's teeth can help reduce decay, the addition of fluoride to drinking water is definitely not a good idea. Fluoride in drinking water has caused widespread dental fluorosis (mottled and discolored enamel), it is a cumulative poison, which means that it builds up in bone and tissue, and it has been linked to lower IQ in children and to Alzheimer's disease in adults.
A) Argument; conclusion: The addition of fluoride ... not a good idea.
B) Argument; conclusion: Fluoride is a cumulative poison.
C) Nonargument.
D) Argument; conclusion: The topical application of fluoride ... reduce decay.
E) Argument; conclusion: It has been linked ... Alzheimer's disease in adults.

Question

Quizplus · Accepted Answer

The passage presents an argument against the addition of fluoride to drinking water, concluding that it is not a good idea based on several reasons, including dental fluorosis, its cumulative poison nature, and links to lower IQ and Alzheimer's disease.

While the Topical Application of Fluoride to Children's Teeth Can