WRITING (PART A—–(–1))=BY THE CHANGE IN XVALUES. THEREFORE,(3–(20)MUL...

5. a. Choice aremoves the redundancy of Part 3 bypronoun this phrase could modify. Choice bistaking out the word also, which repeats thecorrect because it supplies the missing subjectmeaning of the introductory phrase in additionpronoun I.Choices a,c, and d are incorrectbecause they let the modification error stand;to. Choiceb is incorrect because the passagenone of them provides a subject pronoun theonly mentions one patrol, so making the wordplural would not make sense. Choice csuggestsphrase could modify.