Explanation:
The reason for cholera attack is the consumption of contaminated water or food. This might cause serious diarrhea and sometimes it might lead to death if proper cure is not practiced.
Option 2: The contamination is happening mostly due to the industrial waste sent improperly to the water. So this needs to be stopped
Option 3: Promoting healthy usage will reduce the effect of spreading cholera
Option 4: Change in the rate of find will also protect the water and hence reduce the disease.