QUESTION: Fix punctuation: 3 SeleniumNew Research Caution Required
ANS: 3. SeleniumNew Research (Caution Required)

QUESTION: Fix punctuation: In seconds you will learn exactly what type of R02 file you have the software program associated with your file the publisher who created it its security safety status and a variety of other useful information
ANS: In seconds, you will learn exactly what type of R02 file you have, the software program associated with your file, the publisher who created it, its security safety status, and a variety of other useful information.

QUESTION: Fix punctuation: Surgery to replace the defective valve may be attempted for some patients but you may need to search for a surgeon skilled in this specialized surgical technique
ANS: Surgery to replace the defective valve may be attempted for some patients but you may need to search for a surgeon skilled in this specialized surgical technique.

QUESTION: Fix punctuation: H2 the height of the wall to the right
ANS:
H2 - the height of the wall to the right