The correct answer is: B. Ashok Mehta
The Ashok Mehta Committee was appointed in 1977 to review the working of the Panchayati Raj. The committee submitted its report in 1978, which recommended a three-tier structure of Panchayati Raj institutions at the village, block, and district levels. The committee also recommended that Panchayati Raj institutions should be given more powers and functions.
The Balwant Rai Mehta Committee was appointed in 1957 to study the working of the Community Development Programme. The committee submitted its report in 1958, which recommended the establishment of Panchayati Raj institutions.
The K.N. Katju Committee was appointed in 1962 to review the working of the Panchayati Raj institutions. The committee submitted its report in 1963, which recommended strengthening the Panchayati Raj institutions.
The Jagjivan Ram Committee was appointed in 1978 to review the working of the Panchayati Raj institutions. The committee submitted its report in 1979, which recommended further strengthening the Panchayati Raj institutions.