Question

Which of the following is MOST helpful when using a product's instruction manual? a Parts List

a Common Features chart
the Table of Contents
the Introduction

Answer 1

I would Say the table of contents because then if you have a question on something then you can look there and skip right to that page and find what you are looking for.
I hope this helps you

Answer 2

A. Parts List is most helpful when using a product's instruction manual.