à un question

You mostly use this after the verb répondre. For example, répondre à une question means to answer a question. Remember that à + une stays as it is. If the question was masculine, it would change, but question is always feminine. You can add adjectives like difficile or simple after question. It is like building with LEGOs; just snap the pieces together. Don't overthink the grammar here.

Use it in any situation where information is being exchanged. Use it at school when the teacher calls on you. Use it at work during a big presentation. Use it when your partner asks why you bought another pair of shoes. It is perfect for emails, texts, and face-to-face chats. It is a very safe, standard phrase. You won't offend anyone by saying it.

Do not use it if you are asking the question yourself. To ask, you use poser une question. If you use à there, it sounds like you are throwing the question at a wall. Also, avoid it if you are giving a long speech. In that case, you might say you are 'addressing a topic' instead. It is for specific inquiries, not general philosophical rants. Keep it focused on the direct exchange.

French culture values precise communication and intellectual debate. Answering a question is seen as a sign of respect and engagement. In French schools, students are taught to be very structured in their responses. Even a simple répondre à une question implies a certain level of logic. It is not just about talking; it is about providing a solution. The French love a good 'why' and 'how'.

You will often hear répondre aux questions for the plural version. If you are talking about a specific question already mentioned, use à la question. If you want to be fancy, you can say donner suite à une question. But for daily life, stick to the basics. It works every time without fail. It is the 'white t-shirt' of French phrases—simple and classic.