According to the preface to the pluto files what's best describes the information the book will include

The causes and effects in this passage are the following: Because a second person on the bike was heavier than he thought, he had to pedal harder;  Alfonso hit a pothole, so Sandra screamed; Because it looked like they would crash, Sandra touched Alfonso’s hand.

Explanation:

The theme of this story is inner beauty and how people tend to judge others based on their looks. The setting for the story is  Sacramento, California.  Alfonso is about 13 years old and he is starting to notice how others see him. In the story, it is revealed that Alfonso want to “push his crooked teeth to where he thought they belonged” and “did fifty situps a day" so that he will look more fit. Alfonso had borrowed his brother Ernie's bike to go and meet Sandra because his own bike was broken.