Nouns ending in -tion are feminine.
The suffix forms abstract nouns of action or state.
Is question masculine or feminine?
laquestion
The rule behind it
99.8% of -tion nouns are feminine
In context
Je ne peux pas répondre à votre question.
I cannot answer your question.
Quant à moi, je n'ai aucune question.
As for me, I have no question.
Je serai heureux de répondre à votre question.
I'll be happy to answer your question.