The EVS textbook has a chapter on snake charmer. It is intended to make children aware and be sensitized—

The correct option is: that snake charmers may not harm snakes and they need to be provided with alternatives before depriving them of their livelihoods.

Explanation:
The NCERT Environmental Studies (EVS) textbook for Class 5 includes a chapter titled "A Snake Charmer's Story" (Kalbeliya tribe). The primary educational objective of including this chapter is to introduce children to the relationship between humans and animals, and to build empathy toward traditional communities.

Key educational goals of this chapter include:
1. Sensitization towards snake charmers: Understanding that snake charmers rely on snakes for their traditional livelihood and culture, and they often care for and respect these animals rather than intentionally harming them.
2. Livelihood & Policy Balance: While laws (like the Wildlife Protection Act) prevent catching and keeping wild animals to protect wildlife, it is important to recognize the economic impact on communities like snake charmers. Society needs to provide them with viable alternative livelihoods before stripping away their traditional means of survival.
3. Promoting Empathy & Awareness: Encouraging students to look at issues from multiple perspectives—both animal welfare and human livelihood needs.