The correct answer is option 4: 1, 2, 3 and 4.

The Chipko Movement was indeed an environmental movement aimed at preventing the cutting down of trees. Option 1 is correct.

Option 2 is also correct as the movement raised broader questions about ecological and economic exploitation. It highlighted the detrimental effects of deforestation on both the environment and local communities.

However, option 3 is incorrect. The Chipko Movement was not a movement against alcoholism. It focused specifically on environmental issues and the rights of local communities.

Option 4 is correct as the Chipko Movement also demanded that local communities should have control over their natural resources. The movement called for the decentralization of decision-making power and the involvement of local communities in managing and protecting their forests and resources.

In summary, the Chipko Movement was primarily an environmental movement to prevent tree-cutting, but it also raised questions about ecological and economic exploitation. It demanded the rights of local communities to control their natural resources.