Roger : Why don’t we prepare an earthquake emergency kit?
Emily : That’s a good idea. Let’s do it.
Roger : - - - -
Emily : Water, food, flashlight, first aid kit and some batteries. We also take a whistle to signal for help.
Which of the following completes the dialogue?
A) What can we do to slow down global warming?
B) Do you think there will be a water shortage?
C) Why do we have to save the nature?
D) What do we need for it?