1. 밑줄친 부분에 왜 to부정사 뒤에 ~ing 형태가 나왔는지 설명 부탁드립니다
the topic was whether analyzing the pluses and minuses of the relationship can be an answer to seeing how we feel about a special person in our life.

2. 밑줄친 관계대명사 what 앞에 전치사 to 나온 이유 설명해 주세요
the result shows us that too much analysis can confuse people about how they really feel and that there are severe limits to what we can discover through over thinking.