Correct Answer:
C. 1962
Pakistan established diplomatic relations with the European Economic Community (EEC) in 1962. This was a crucial step in building economic and political ties between Pakistan and the European bloc, which later evolved into the European Union. The EEC was formed in 1957, and formal relations with non-member states like Pakistan began to solidify in the early 1960s. Options A (1951) is too early as the EEC was still in its formative stages. Option B (1965) is incorrect because relations were already established by then. Option D is false as 1962 is the correct year.