The correct option is A To reduce environmental pollution
Eco-friendly houses are also known as green homes. The purpose of making these eco-friendly houses is to reduce environmental pollution on earth.
Some other advantages of eco friendly houses are:
1)They minimize the use of natural resources.
2)They encourage people to use non-exhaustible sources of energy such as biogas, wind energy, and solar energy.
3)They help in recycling water and garbages.
4)They also helps to avoid the use of artificial colours and materials.