Question

Which of the following occurs during the revision process? Check punctuation, fix organization, check verb tenses, fix spelling errors

Answer 1

Revision is double checking the work and making improvements in spelling, grammar, and punctuation.  It includes making sure organization is what it should be.  It's a chance to make sure you're staying on topic as well, and eliminate things that may not really apply, or add other things that might have been left out. 
Hope this helps.