In the following question, out of the four given alternatives, select the alternative which best expresses the meaning of the Idiom/Phrase.
Back to square one

Correct option is A

· Meaning of "Back to square one": To start again from the beginning due to failure.
· Example Sentence: Our project failed, so we are back to square one.
· Similar Idioms:
· Start from scratch – To begin again from the beginning.
· Reinvent the wheel – To start over unnecessarily.