다음 글의 밑줄 친 부붕 중 어법상 잘못 된 것은?
although her school career counselor 1. mocked her dream, 16-year-old jane goodall did not give up. her mother encouraged her 2. to go after what she wanted. jane had always wanted to study wildlife in africa ; so on she went, 3. immersed in extensive research about chimpanzees in tanzania. her research 4. becoming well-known and changing the way people 5. to see chimpanzees, her efforts paid off.

각 번호마다 왜 그게 맞는지 틀린 거는 왜 틀렸는지 설명 부탁드립니다.