B starts with “therefore the new act protects..” and has not prior context.
B cannot be the first in the sequence.
C starts with “In 1996, a separate act was passed..”
We, know that A talks about “The provisions of the 73rd amendment..”
This implies that C follows A, as A talks about an amendment and C talks about a separate act.
A talks about provisions not being made available for “areas inhabited by the Adivasi populations” and C talks about, “extending the provisions of the Panchayat system to these areas.”
B follows D as B. Both of them talk about Adhivasi communities to manage their resources but D will come first as D mentions the names of the resources (forests and small water reservoirs, etc.) and B just refers to them as resources.
The order is ACBD.