French phrase
Quelles ~ doivent être incluses ?
Meaning
Which ___ must be included?
When to use it
A direct question about which items are mandatory. Suitable for formal practical situations.
Example dialogue
Quelles pièces justificatives doivent être incluses ?
Which supporting documents must be included?
Il faut inclure le passeport, les relevés de notes et la lettre d'acceptation.
The passport, transcripts, and acceptance letter must be included.