Answer: The decision of whether a speech should inform, entertain or persuade related to the<u> purpose </u>of the speech.
Explanation: One of the first things that a writer must decide when working on a speech is its purpose. <u>The purpose of a speech or a piece of writing can be defined as its goal.</u> Furthermore, there are<u> four major purposes</u>: the expository, which aims at providing information to an audience, the narrative, which consists in entertaining an audience, the persuasive, which expects to convince an audience, and the descriptive, which aims at giving a detailed account of something.
It is shown that the animals have human-like intelligence, and as a result chose to leave their home, but I'm not sure if there is enough evidence to prove any theme.