Use the article titled “A new direction” to answer the question

Which piece of evidence best supports the author’s position that the kids on the advisory board have helped?
When Croarkin presented to the board, he asked for suggestions on reaching kids and teens who might want to try this treatment for depression.
They’re studying how doctors can support kids who are builled about their race, ethnicity, or weight.
He admits he wouldn’t have thought of using a school to look for volunteers if the group hadn’t suggested it.
None of the above

The piece of evidence that best supports the author's position that the kids on the advisory board have helped is: "He admits he wouldn’t have thought of using a school to look for volunteers if the group hadn’t suggested it." This demonstrates that the kids on the advisory board have provided valuable suggestions and input that the author had not considered before.