Because they give clues & statements to show as such
You didn’t give the ‘following’ answers; however, a pronoun takes place of a noun (person, place, or thing). For example, if you were trying to say, ‘Jessie took Jessie’s dog out to walk around Jessie’s neighborhood,” you would say, “Jessie took her dog out to walk around her neighborhood.” ‘Her’ would be the pronoun. It takes place of the noun ‘Jessie’ and prevents repetition.
If a paragraph has more than one main idea, consider eliminating sentences that relate to the second idea, or split the paragraph into two or more paragraphs, each with only one main idea. Watch our short video on reverse outlining to learn a quick way to test whether your paragraphs are unified. In the following paragraph, the final two sentences branch off into a different topic; so, the revised paragraph eliminates them and concludes with a sentence that reminds the reader of the paragraph’s main idea.
C. Remove any unnecessary sentences from the paragraph.