Which of these strategies is recommended to make proofreading easier?

keep a dictionary on hand or refer to an online guide.
rely only on your computer's spell-checker to correct all spelling errors.
proofread your paper while in the revision stage.
read your paper backward.
create a reverse outline based on your paper.

The correct answer is options A and C.

When proofreading, one of the most recommended strategies is to keep a dictionary on hand or refer to an online guide, since it will help the proofreader to solve problems related to the use of language in general.

The other useful strategy is to proofread the paper while in the revision state. It is important to state that both strategies can be used at the same time because you consult dictionaries during the revision stage.  

roses are red,

violets are black,

for what you said,

i hope you sit on a big fat tack.