What do you have to submit when applying for a driver’s card?

Your selection is correct: you must submit 1 the driving licence card and 2 a photo.

A driver’s card (for the digital tachograph) is a personal, official document that is linked to you as the driver. The authority needs proof that you hold the required driving entitlement (that’s why they need your driving licence card) and they need to be able to clearly identify you on the card (that’s why they need a photo).

Answer 3 (confirmation from employer) is not required because the driver’s card is issued to the driver personally, independent of a specific employer. It stays with you even if you change jobs.