Breakdown of Tu crois le touriste posant cette question au guichet ?
tu
you (informal singular)
ce
this (before a noun)
au
to the / at the (masculine singular)
la question
the question
Questions & Answers about Tu crois le touriste posant cette question au guichet ?
Why does this sentence use posant instead of qui pose?
Posant is the present participle of poser. In French, you can often replace an active relative clause starting with qui (like qui pose, meaning who is asking) with the present participle. It means the exact same thing but makes the sentence a bit more concise, which is common in written or slightly formal French.
If there were multiple tourists, would posant get an s at the end?
Why is it posant cette question and not demandant cette question?
Why is it Tu crois le touriste and not Tu crois au touriste?
The verb croire changes meaning depending on the preposition. Croire quelqu'un (with no preposition) means to believe that someone is telling the truth, which fits this sentence. Croire à or croire en means to believe in someone or something's existence or abilities.