Environmental Movements

Concept: Environmental movements in India have played a crucial role in conserving forests and natural resources. Some movements specifically focused on protecting trees and preventing deforestation.
Step 1: Understanding the objective of the movement.
The question refers to a movement aimed at protecting trees in the Himalayan region.
Step 2: Identifying the correct movement.
The Chipko Movement originated in the Himalayan region (especially Uttarakhand) in the 1970s. People, particularly women, hugged trees ("chipko" means "to stick") to prevent them from being cut down.
Step 3: Eliminating incorrect options.

• Narmada Bachao Andolan focused on displacement due to dams.
• Silent Valley Movement aimed to protect a rainforest in Kerala.
• Bishnoi Movement is an earlier conservation effort but not specific to the Himalayan context.

Conclusion:
Thus, the correct answer is Chipko Movement.