Why sometimes all the answers are wrong, and you need to unlock to continue to answer the questions?

Question

Why sometimes all the answers are wrong, and you need to unlock to continue to answer the questions?
Thank you Everyone

Answer 1

The answers appear in a different order each time.

Therefore it doesn't do to just click them one after another. 😉

Answer 2

Can you please explain what you are having trouble with?

I can barely understand where the problem is, besides it being about python and functions.