Why is the claim about the vitamins unsupported by sufficient evidence?

Question

(1 point)
Responses

The passage includes references to emotions.
The passage includes references to emotions.

The passage centers on a personal testimonial.
The passage centers on a personal testimonial.

The passage includes references to scientific research.
The passage includes references to scientific research.

The passage uses a figure of speech in the last line.

Answer 1

The passage includes references to scientific research.