Read the following excerpt and answer the questions.

Mosquitoes spread various types of diseases. They thrive in tropical climates. Stagnant water, rotten waste in the open and open drains contribute significantly to the development of mosquitoes. For the prevention of mosquito-borne diseases, we must ensure that garbage is collected regularly and properly managed, prevent water logging and keep the surrounding area clean.

Which of the following options is correct according to the given statements?

A. Most diseases are spread by mosquitoes.

B. It should be divided into biodegrable and non-biodegrable wastes before disposal of waste.

C. The condition of the drainage system is very poor.

D. Stagnant water is a breeding ground for mosquitoes.

Only option 4 is the correct answer. Stagnant water is a breeding ground for mosquitoes because they thrive in tropical climates. Stagnant water, rotten waste in the open and open drains contribute significantly to the development of mosquitoes even small quantities of water can serve as a perfect breeding ground for mosquitoes that transmit virus causing dengue, malaria, and other life-threatening vector-borne diseases.

Hence, the correct answer is "Option (1)".

Additional Information

• It is the anopheles mosquitoes that carry parasites that cause malaria, dengue, and chikungunya. Furthermore, viral diseases are transmitted by the Aedes Aegypti mosquito, and the virus which causes Japanese Encephalitis is transmitted by Culex genus mosquitoes.
• If they are filled with debris, they will trap water during the next rainfall instead of letting it drain. Mosquitoes will then breed in this standing water. Prevent other sources of standing water. Standing water is the number one breeding spot for mosquitoes.