Context: Unlike outside and backstage , it was cool in the bus . He mentally thanked their bus driver for switching on the airco this morning as he made his way to the living room area . He flopped down on the large , brown sofa and closed his eyes , sighing again .
Question: Why would the air in the bus be turned on ?
Option 0: None of the above choices .
Option 1: To help with mental switching their train of thought .
Option 2: To block out external noise when they close their eyes to sleep .
Option 3: To raise the temperature and combat the cool air .
Answer: 0