Question

which precaution should be taken when leaving home in the event of a flood?
turn off the electricity.
lock the doors.
leave in a car, if possible.
leave the windows open a crack.

Explanation:

In a flood, water and electricity are a dangerous combination. Turning off the electricity reduces the risk of electrocution and electrical - related hazards. Locking doors, leaving in a car, or leaving windows open a crack are not as crucial as turning off the electricity in terms of immediate safety.

Answer:

Turn off the electricity.