The author’s purpose for writing this passage was to __________.
A. help readers understand when dental hygiene took hold
B. convince readers that brushing every day is important
C. help readers understand why U.S. soldiers had to brush their teeth
D. convince readers that oral health should be taught in schools
The correct answer is B. convince readers that brushing every day is important.
Explanation: The passage likely emphasizes the significance of daily dental hygiene practices, aiming to persuade readers to adopt this behavior for better oral health. Each of the other options, while related, does not necessarily capture the main intent as clearly as option B does. If you need further clarification on the passage or its themes, feel free to ask!