Read the excerpt from "Object Lesson 1". Louise Carpenter stood tensely straight at her desk, her pretty face almost as white as the envelope she was clutching. And she was glaring at a mass of boy and girl faces so blankly, so furtively quiet that the silence sizzled.

How does the author's word choice help express the tone of the excerpt?

The positive connotations of the words "pretty," "quiet," and "silence," give the excerpt a tone of calmness.
The positive connotations of the words "pretty," "quiet," and "silence" give the excerpt a tone of nervousness.
The negative connotations of the words "tensely," "clutching," and "sizzled" give the excerpt a tone of nervousness.
The negative connotations of the words "tensely," "clutching," and "sizzled" give the excerpt a tone of calmness.