What is the following key word used for? later choices: sequence adding an idea explanation or illustration emphasis and purpose time repetition and summary

The key word "later" is used to indicate sequence.

Explanation: "Later" is a signal word, which means that "later" is capable of establishing a relationship between ideas that are presented in one or more sentences. The type of relationship that this key word can establish is "sequence", which consists in presenting events in a specific order. In that way, "later" can be used to indicate that an event took place before another one.  

the answers are:

1. dolores driscoll - b. first person minor

dolores is a minor character who happens to be driving the bus at the time of the accident. she narrates picking up each of the children and her last memory is the children being thrown around the bus.

2. billy ansel - a. first person major

billy loses his twins in the accident. he tells his own story, how he witnessed the accident and how he tried to the rescuers. he is a major character, as he is at the center of the story.

3. mitchell stephens - c. first person observer

mitchell enters the story after the accident. he is a lawyer who learns about the accident based on other characters observations. though he tells the story from a first person perspective, he is just an observer.

as for matcthing the message or lesson posted with the person who said them:

1."obviously, you can't control everything, but you are obliged to take care of the few things you can. i'm an optimist basically who acts like a pessimist. on principle. just in case." - dolores driscoll

2. "i could no longer believe even in life. . for me now the only reality was death." - billy ansel

the positive connotations of the words "pretty," "quiet," and "silence" give the excerpt a tone of nervousness. i think its this