Select the option that gives the most appropriate meaning of the underlined idiom.
My friends succeeded because they left no stone unturned in their search for an answer to the problem.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. made every possible effort.
Idioms: A group of words established by usage as having a meaning not deducible from those of the individual words.
"Left no stone unturned" means to try every possible course of action in order to achieve something.
Example: The researcher left no stone unturned in her search for the original documents.