to부정사와 what 문장 구조 질문드려요

1. in cases where one right must take priority, dershowitz says, the choice is clear.
2. children have a right to live and be brought up to make their own religious decisions.
3. we only want the right to do what is good for children.
여기서 to부정사와 what의 쓰임을 설명해 주실 수 있을까요?