English Junior High over 7 yearsago

このカッコ⑷の問題の答えが「ア」なんですが何故ですか？

5 \イ) 8a8Knng (ワ) Wi aSK ou (3) r am ド RA 5 ) that my friend ie doing well in her new school. ar (イ) which hears (ウ) hearabout (エエ) canhear