Select the most appropriate meaning of the highlighted idiom in the given sentence.
My brother has decided to settle in London for good.

Correct option is A

Option (a) is the correct meaning of the given idiom.
For good: Permanently; for always. (हमेशा के लिए)
Example: He left the village for good and never came back.
Other related idioms:
• Once and for all – decisively and finally.
• For keeps – permanently.
• Put down roots – to settle permanently in a place.