The idiom ‘bag and baggage’ means–

Option A is correct. 'Bag and baggage' means taking away absolutely everything one owns, leaving nothing behind. It is used for someone who leaves or is thrown out completely, such as a tenant evicted with all belongings, or a person who walks out of a job or a place for good.

Why the others fail:

• B (all members): The idiom refers to physical possessions, not people. 'Members' has no link to the phrase.
• C (all the money): Money is only one kind of possession. The idiom covers everything one carries or owns, so this is too narrow and, in effect, wrong.
• D (all the instruments): This is a literal misreading. 'Instruments' has no place in the idiom's meaning.

The core concept here is idiom comprehension, which is tested in the English section of UPPSC PCS Prelims and supports precise usage in Mains essays and comprehension answers. Idioms carry fixed meanings that cannot be decoded word by word.

Trap: Reading 'bag' and 'baggage' literally and guessing a meaning from the words rather than recalling the fixed idiomatic sense.