We are discussing the usage of "only" in another post ("only has" vs. "has only", when to use which?).
I am asking the reason why "only" could not be used as an adjective in my second example.
I guess I could say
I am asking the reason ...
I am asking for the reason ...
I am asking about the reason ...
I want to show my politeness. I am not sure which one of those is appropriate.
Could someone please give a hint?