Sainik School Entrance Exam 2021 Solved Paper

(b) The phrase 'to tie yourself in knots' means to get confused
1: to cause problems for oneself from being too careful, trying too hard, etc.
The mayor tied himself in knots answering a touchy political question.
2: to become very upset or worried or confused
I don't know why they're tying themselves in knots over such a trivial problem.