The main issues of concern of the Nanda Devi Biosphere Reserve are: 1. Unregulated religious tourism. 2. Poor infrastructure for management and conducting long term studies. 3. Increasing frequency of international tourists. 4. Increasing frequency of park-people conflicts.

The main issues of concern of the Nanda Devi Biosphere Reserve are: 1.

1.	The main issues of concern of the Nanda Devi Biosphere Reserve are: 1. Unregulated religious tourism. 2. Poor infrastructure for management and conducting long term studies. 3. Increasing frequency of international tourists. 4. Increasing frequency of park-people conflicts.
A.	1, 2 and 3 are correct
B.	1, 2 and 4 are correct
C.	1, 2 and 4 are correct
D.	1, 2, 3 and 4 are correct
Answer» D. 1, 2, 3 and 4 are correct