Select the most appropriate option to substitute the highlighted segment in the given sentence. If there is no need to substitute it, select ‘No substitution’.
I asked my brother for the key to the garage.

Correct option is B

The correct substitution is (b) No substitution.
Explanation:
The sentence is grammatically and contextually correct. The preposition "to" is used correctly here. We use “key to” when referring to access to a location.
Correct sentence: I asked my brother for the key to the garage.
Grammatical Rule Used:
We say:
· key to a door/room/building/solution.
· Incorrect: key of/in/into the room.
Example:
· Do you have the key to this cupboard?
Information Booster:
"Key to" is used to denote the destination, purpose, or access of the object.