Pls help, i give 45 points
Read the passage about a Labrador retriever.

About 10 years ago, I was training my new yellow Labrador retriever, Spunky. The method of training involved using a clicker. The sound would signal to Spunky that he correctly obeyed instructions. The clicker worked like a charm. There were no emotional "good dog” or "no” comments; I would just click to acknowledge that Spunky did as asked. Amazed at the effect, I wondered if I could apply the same or a similar method to my runners and jumpers on the track-and-field team I coached. After I explained to the team why I wanted to try the method—to mark proper form—I began my experiment. What follows is a description of my experiment and the often astonishing results of removing emotional comments from training in favor of a nonjudgmental marker.

Which description best summarizes the passage’s organizational pattern?

A. The author is comparing and contrasting a variety of training methods.
B. The author is comparing and contrasting the behaviors of dogs and humans to explain why he chose a new training method for runners, and showing a sequence of events in order.
C. The author is presenting the pros and cons of using a clicker for training both dogs and runners.
D. The author is using cause and effect to show how he decided that a training method used for dogs could work for runners, and showing a sequence of events in order.