Answer:
These poets' general adherence to standard poetic forms, rhythm, meter, and rhyme made their poetry especially suitable for memorization and recitation.
If you mean tone, then the tone is going to be quite saddening or angering seeing as how the lottery is talking about a lottery of death.
To build motivation for the character gives a backbone to the story and about the Arthur for example if the Arthur got the motivation from seeing a kid take a candy out of a store that motivation for that character would be a bad guy or a heel and or antagonist there for the motivation for a character is very important they reveal it so you can get a bit of a background on the character in more information on the story and the Arthur.