Singular
I will be preparing
You will be preparing
He/she/it will be preparing Plural
We will be preparing
You will be preparing
They will be preparing
The answer is C because an indefinite pronoun is not specific and if it was b it would be everyone wants
If you have Google docs, go to add-ons and search easy-bib. You put in the site and it gives it back to you in MLA format. If you don't have Google docs, copy and paste this website into your search engine: http://olympus.sandhills.edu/english/wordguide/mlaformat.html
Extraneous means that something is irrelevant or something that has nothing to do with a particular subject. I hope this helps! :)