The correct options are
A Drink only boiled water.
C Use bleaching powder and lime to disinfect the surroundings.
During floods, many measures can be taken to prevent diseases and other harmful effects of floods. Drink boiled water. Use bleaching powder and lime to disinfect the surroundings. Avoid entering floodwaters. If you have to enter, wear proper protection for your feet and check the depth and current with a stick. Stay away from knee-deep waters.