The correct answer is A.
Education on the environment is important for creating an awareness among students about the environment. It can help them to understand the importance of protecting the environment and how they can do their part. It can also help them to develop critical thinking skills and learn how to make informed decisions about the environment.
Option B is incorrect because it is not necessary for education on the environment to put more burdens on students. There are many ways to teach students about the environment that are fun and engaging.
Option C is incorrect because education on the environment is not a mode of entertainment for students. It is an important part of their education that can help them to learn about the world around them and how to protect it.
Option D is incorrect because education on the environment is not like giving work to teachers. It is an important part of their job to teach students about the environment.