Read the given passage/argument and answer the question that follows it.
There have been many cases of people dying in a burning building. One of the reasons of their death is somewhat peculiar. The main doors of some buildings opened inwards. By the time the crowd of people running outwards realized this, the people at the back would push them forward, leaving no space for the door to open. The people got trapped in panic and died from suffocation.
Which one of the following is an architect most likely to include in the blueprint of a building to prevent such deaths?
1
Door should be made up of glass.
2
Doors should open outwards.
3
Fire extinguishers should be installed in the building.
4
More windows should be provided to prevent suffocation.