Which statement best explains how the author supports the purpose of the passage? Babysitting

The author tells a story about babysitting, which provides ideas that help people who want to babysit.

The author tells how to greet children when you first meet them, and then tells stories about babysitting.

The author explains that children need to be safe, happy, and comfortable when they are getting acquainted with a babysitter.

The author explains that babysitting is an art and then provides the skills needed to be successful at this "art."