Final answer:
Nicholas would find the 'Track Changes' feature in word-processing software most useful for tracking and correcting errors during his drafting and revision process.
Step-by-step explanation:
Nicholas, as a food writer who is involved in drafting and revising content, would find the Track Changes feature in word-processing software especially useful for checking and correcting errors. This feature allows him to see what changes have been made to the document, who made them, and when they were made. It also enables reviewers to suggest edits, which can be reviewed and accepted or rejected by the author. This functionality is critical for managing revisions and ensuring the accuracy of the final draft. Besides, Track Changes is also beneficial for collaborative editing, where multiple reviewers might be providing feedback on a document.
Other features like comments can be utilized for side discussions without altering the text, while the spelling and grammar check tools help in identifying basic errors in spelling and grammar. However, Track Changes is the comprehensive tool for overseeing revisions and ensuring all edits are properly reviewed and applied.