Select the most appropriate meaning of the given underlined Idiom:-

One day I'll be successful "come hell or high water"

Whatever difficulties may occur

The most appropriate meaning of the underlined idiom "come hell or high water" is whatever difficulties may occur. The idiom comes from the idea of someone being willing to face any challenge, no matter how difficult. In a figurative sense, to say that someone will do something "come hell or high water" means that they are determined to do it, no matter what obstacles or challenges they face.

The other options are not as accurate descriptions of the meaning of the idiom. Going through tough times is not the same as facing any challenge. Treading on an unknown path is not typically associated with the idiom "come hell or high water." Not to rely until you are sure is not typically associated with the idiom "come hell or high water."