<u>Answer:</u>
<em>A. It provides background information for the text.</em>
<u>Explanation:</u>
An introduction is a crucial part of any writing. Therefore when writing any piece, you must give a brief overview of what the whole text will be about. The ideas that are provided in the introduction enables the reader a chance to understand and have a brief of what to read about. In simple terms the introduction states the thesis of the entire work. Before writing an academic work of another essay always starts your work with a summary that explains what the test entails.
The case of the pronoun in the sentence is A) Nominative.
<span>Your answer </span> America's<span> best chance to retain its freedoms and individualist spirit is if ... These days</span>our education system, media and political conversation .