Which of the following threats to personal safety would more likely require lockdown as opposed to evacuation? fire explosion sniper bomb threat

If there were a fire, explosion, or bomb threats in schools, for example, are required to evacuate but if it's a sniper or shooter then they do a lockdown. Because if the shooter is on the outside and they decide to evacuate then they could get shoot so most schools and places do lockdowns. 

So the answer would be a sniper. I hope this helps!

Administration and victim

Answer labor;