QUESTION: Fix punctuation: The fastest and easiest way to open your CD file is to doubleclick it
ANS: The fastest and easiest way to open your CD file is to double-click it.

QUESTION: Fix punctuation: To begin your free file analysis simply draganddrop your ARC file inside the dotted lines below or click Browse My Computer and select your file
ANS: To begin your free file analysis, simply drag-and-drop your ARC file inside the dotted lines below, or click "Browse My Computer" and select your file.

QUESTION: Fix punctuation: Total consumption W 106 Body
ANS: Total consumption (W): 106 Body

QUESTION: Fix punctuation: 1 UV resistant top grade high quality
ANS:
1. UV resistant, top grade, high quality