Final answer:
The author used the phrase "in school, at work, on the bus, and so on" to create clarity, relate to the reader's experiences, and make the text more immersive through descriptive writing.
Step-by-step explanation:
The author likely added the phrase "in school, at work, on the bus, and so on" to sentence 4 to provide specific examples of where the action can take place, which adds to the vividness and relatability of the text. This technique is known as the use of descriptive writing, which helps pull the reader into the action by allowing them to envision the scenarios in which the events occur. By using descriptive phrases that cover a range of common settings, the author makes the narrative more immersive and inclusive of the reader's own experiences. This phrase also demonstrates the altering of text during the revision process to improve clarity and conciseness, bringing the text closer to the reader's reality.