Number 3 seems the be the correct answer
I Think The answer is c I hope it helps Message Me and I’ll fix it My friend
I would say that the sense of urgency would be for warning that Hitler had a plan to invade Britain since such an event would be extremely serious and would require all the armed force to be marshalled to prevent this and to fight the Nazis in the air, on the ground and at sea to repel them and show the resolve of the people of Britain.
The answer is create a pause and leave your audience anticipating what’s next. Hope this helps