During the 1960s, as India's foreign policy was being shaped, Prime Minister Lal Bahadur Shastri, India's second Prime Minister, advocated for strengthened ties with the United States and its allies. His leadership period involved initiatives to cultivate diplomatic connections with Western nations while simultaneously upholding India's commitment to non-alignment, particularly in the context of the Cold War. Consequently, option (D), Lal Bahadur Shastri, is the accurate selection.