With reference to the Environment Protection, which among the following is / are legally binding conventions?
1. United Nations Framework Convention on Climate Change
2. Asia-Pacific Partnership on Clean Development and Climate
3. Vienna Convention for the Protection of the Ozone Layer
4. United Nations Convention to Combat Desertification
Select the correct option from the codes given below:

Answer: [D] 4

This question is a part of GKToday's Integrated IAS General Studies Module