What does it mean to say that an event has a time box?

Question

Q:

What does it mean to say that an event has a time box?

 The event must happen at a set time.

 The event must happen by a given time.

 The event must take at least a minimum amount of time.

 The event can take no more than a maximum amount of time

Answer 1

The event can take no more than a maximum amount of time.