Select the most appropriate idiom for the given phrase.
Completely mistaken

Correct option is D

Option (d) "All wet" is the correct idiom for "completely mistaken."
Given Idiom: " All wet" means completely wrong or mistaken.
Example: If you think I’m going to let you borrow the car again after last time, you’re all wet.
Other related idioms
· " Off the mark" - not accurate or correct.