The correct options are
A In case there is no electricity, light a candle.
B To feel the breeze, you can take your face out of the train.
D You can stop the train inside a tunnel.
When travelling by train make sure not to carry flammables materials. Do not put any part of your body outside a moving or a stationary train. Also, make sure that the train doesn’t stop on a bridge or inside a tunnel. In such cases, evacuation would be impossible. When in train you can drink water whenever you wish.