Step 1: Understanding the Concept:
Historical commissions on higher agricultural education formulated the Land-Grant model of rural agricultural universities in post-independence India.
Step 2: Detailed Explanation:
The University Education Commission (1948--49), chaired by Dr. Sarvepalli Radhakrishnan, submitted a landmark report recommending the establishment of dedicated 'Rural Universities' patterned after the US Land-Grant College model.
This vision culminated in the establishment of India's first Agricultural University at Pantnagar (GBPUAT) in 1960.
Step 3: Final Answer:
Therefore, Dr S. Radhakrishnan recommended the establishment of agriculture universities, matching option (A).