Answer:
D
Step-by-step explanation:
A:
¿Cuál es la fecha de hoy?
This means: What is the date today?
You wouldn't use this to ask when something happens.
B: ¿Qué día es mañana?
This means: What day is tomorrow?
Again, this wouldn't be used to ask what time something happens.
C: ¿Qué hora es?
This means: What time is it?
This just asks what time it is, not what time something is going to happen. Therefore, this is not correct.
D: ¿A qué hora es …?
This means: At what time is...?
This is the correct choice. This is used to ask at what time something is happening.
The answer is D: ¿A qué hora es …?