In sentence c from the previous exercise , which word is used to avoid repeating the name of the person? Read the following fragments again, focus on the words in bold and do exercises 3-5. I. "a computational scientist who studies social networks." (page 140) II. "someone whose actions you respect'(page 145) III. "time and effort that take away from work" (page 140) IV. "patterns of intimacy with others , which they tend to maintain over time " (page 140)