Correct Answer:
A. 1949
The correct answer is 1949. The Objectives Resolution was adopted by the Constituent Assembly of Pakistan on March 12, 1949. This landmark resolution laid down the foundational principles and objectives for the future constitution of Pakistan, declaring that the state would be based on Islamic principles of democracy, freedom, equality, tolerance, and social justice. It served as a preamble to subsequent constitutions. Options like 1948 or 1950 are incorrect dates for this pivotal constitutional document's adoption, making 1949 the only accurate choice among the given options.