The Tone is achieved through word choice (diction), sentence construction and word order (syntax), and by what the viewpoint character focuses on. The Tone is created or altered by the way the viewpoint character/narrator treats the story problem and other characters, and by the way, he responds to the events surrounding him.
A, their
the men brought their own tools
Rule of 5
5 words in a sentence
5 sentences in a paragraph
5 paragraphs in an essay
The author describes the types of training that can be done to ease the transition
At the end it shows how different types of training is helpful