To paraphrase properly you should a. rearrange the ideas in a different order b. express the main ideas in your own words c. delete a few words to shorten the passage d. change several words to alter the passage

To paraphrase properly you should express the main ideas in your own words. The definition of paraphrase is "a rewording of something written or spoken by someone else" so b would make the most sense. Although if you do want an alternate than you could choose d. But that one doesn't seem as good as this b.