Answer:
b. taking out an awkward phrase
Explanation:
Option B is an example of local revision.
Local revision is known to deal more with sentence-level revision. In this type, words are changed in order to make a sentence clearer, grammatical or spelling errors are correcting, awkward phrases or clauses are removed, etc.
Another type of revision is global revision. This type focuses on the big picture of the whole work; the ideas, audience, analysis, organization, etc.
Allyn & Bacon Guide to Writing Concise Edition stated, ""You revise locally whenever you make changes to a text that affect only the one or two sentences that you are currently working on. In contrast, you revise globally when a change in one part of your draft drives changes in other parts of the draft"
Therefore, Option B is the correct answer.