The correct option is B Switching on the electrical main supply in the house.
During a cyclone, it is recommended that you remain alert to the warnings issued on tv, phone or radio etc. by the Indian Meteorological Department. The information collected should be passed to others too. Necessary arrangements should be made to shift essential household goods, domestic animals and vehicles etc. to safer places. Always switch off the electrical main supply to your house during cyclones as it would protect you and your house from short circuits, electric shock etc.