Question

4. Which sentence presents an unsound argument? I enjoy going to the dentist because she helps me take care of my teeth. I have to find a new dentist because my former dentist is retired. Dentists are often not popular with children. My dentist is the best because he is my neighbor.

Answer 1

I have to find a new dentist since my previous dentist has left.

(I have to find a new dentist because my former dentist is retired.)

Answer

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Answer 2

I have to find a new dentist because my former dentist is retired

Step-by-step explanation:

This is because you cannot use a present tense with a past tense.

The correct answer should be; I have to find a new dentist because my former dentist has retired.

Hope this helps:-)