Step 1: Identify the committee.
The Balwant Rai Mehta Committee (1957) was appointed to evaluate community development and panchayati raj programs in India.
Step 2: Recommendations.
It recommended a three-tier Panchayati Raj system (village, block, district) to ensure democratic decentralization and active citizen participation in local governance.
Step 3: Conclude.
\[
\boxed{\text{Panchayati Raj (Option B) is the domain of the committee's recommendations.}}
\]