Correct Answer: Impossible to return to an earlier state

Solution : The second option is correct.

The most appropriate meaning of the given idiom is impossible to return to an earlier state.

The idiom, burn one's bridges means to take actions that make it impossible to return to an earlier state or relationship. It often implies making a decision or doing something that creates a permanent change, typically by severing ties, cutting off connections, or eliminating options for going back.