French phrase
Quelles sont ~.
Meaning
Which ___ are needed.
When to use it
Asks which items are needed for a procedure or application. Suitable in polite contexts.
Example dialogue
Quelles sont les pièces nécessaires pour le visa.
Which documents are needed for a visa?
La lettre d'acceptation, un relevé de compte et le passeport.
A letter of acceptance, a bank statement, and a passport.