The prewriting stage is essential to the writing process because it allows the writer to Abc
generate and organize ideas.
adjust word choice and voice.
create transitions between ideas.
exercise proper grammar and usage.

Generate and Organize ideas.

Explanation:

During the prewriting it’s important to plan what you are writing and where/when you’ll write it. The prewriting stage is important because it helps organize all thoughts and ideas on the subject you’re writing.

the red coloration of the lungs looks alarming and adds to the overall message that the flu is threatening apex

"a" because he is appealing to logic as oppose to appealing to the audience's emotions.