Choose the idiom/phrase that can substitute the highlighted group of words meaningfully.
The police have been investigating his accounts looking for evidence of fraud.

Correct option is C

Option (c) "Digging around" is the correct idiom to replace the highlighted phrase.
Digging around: To search thoroughly for information or evidence. Hindi meaning: छानबीन करना Example: The journalist was digging around to uncover the truth about the scandal.
Other options:
· Through thick and thin: हर हाल में, under all circumstances.
· In the dark: अनजान होना, unaware of something.
· Hitting the hay: सोने जाना, going to bed.