All of the following are preventive measures against malaria, except
(a) destruction of breeding places of mosquitoes
(b) oral rehydration therapy
(c) spraying of insecticides
(d) sleeping in a mosquito net

Correct Answer: (b) oral rehydration therapy

Explanation:

 Plasmodium, a microscopic-single celled organism, is responsible for causing malaria. Female Anopheles mosquito is the carrier of Plasmodium and spreads malaria from one person to another.

We can control the spread of Malaria or Dengue by adopting the following measures:

• Cover arms and legs
• Wear light-colored clothes
• Use mosquito repellants
• Avoid traveling to places with outbreaks of these diseases
• Fix mesh on doors and windows of the house to prevent the entry of mosquitoes
• Use mosquito nets over the beds to avoid mosquito bites
• Keep the surrounding areas clean and free from the garbage
• Do not allow stagnant water to collect in buckets, flower pots, or barrels as these provide the sites for breeding to mosquito