Select the most appropriate meaning of the given idiom.
Rank and file

Correct option is B

Option (b) is the correct meaning of the given idiom.
Rank and file: The ordinary members of an organization or the common workers as opposed to the leaders or officers. (सामान्य कर्मचारी या सदस्य)
Example: The new policy did not go down well with the rank and file of the company.
Other related idioms:
• Bottom of the ladder – the lowest rank or position.
• Foot soldier – someone who does the ordinary work.
• Salt of the earth – a very good and honest person.