Brady read this on a pamphlet at the dentist's office.

Shinybrite is the best toothpaste on the market! Eight out of ten patients who tried Shinybrite Minty Creme liked it better than the leading brand of toothpaste. Shinybrite whitens teeth and freshens breath. Regular toothbrushing decreases cavities and gum disease.

What is the writer's opinion, and what evidence is used to support it?

The writer's opinion is that Shinybrite whitens teeth. It is supported with the statistic that eight out of ten patients like it more than the leading brand.
The writer's opinion is that Shinybrite is the best toothpaste. It is supported with the statistic that eight out of ten patients like it more than the leading brand.
The writer's opinion is that regular brushing decreases cavities. It is supported with the fact that toothbrushing decreases gum disease.
The writer's opinion is that the toothpaste freshens breath. It is supported by the fact that Shinybrite is the best toothpaste on the market.

The writer's opinion is that Shinybrite is the best toothpaste on the market. It is supported with the evidence that eight out of ten patients who tried Shinybrite Minty Creme liked it better than the leading brand of toothpaste.

The correct answer is:

The writer's opinion is that Shinybrite is the best toothpaste. It is supported with the statistic that eight out of ten patients like it more than the leading brand.

The writer's opinion is that Shinybrite is the best toothpaste on the market. This is supported by the statistic mentioned in the pamphlet, which states that eight out of ten patients who tried Shinybrite Minty Creme liked it better than the leading brand of toothpaste. This implies that the majority of patients preferred Shinybrite over the leading brand, suggesting that it is superior.

Although the pamphlet does mention that Shinybrite whitens teeth and freshens breath, these statements are not explicitly presented as the writer's opinion. They are instead mentioned as features or benefits of the toothpaste.