Look at the underlined/bold part in this question. Below in this question, three possible situations for the underlined/bold part are given. If one of them (a), (b), or (c) is better than the underlined/bold part, indicate your response on the Answer Sheet against the corresponding letter (a), (b), or (c). If none of these substitutions improve the sentence, indicate (d) as your response on the Answer Sheet. Thus a “No Improvement” response will be signified by the letter (d). The new headmaster affected many changes in the school.