Explanation
The official language declared in the 1956 constitution was both Urdu and Bengali, as stated in article 214(1) of the constitution of Pakistan. This answer is correct because the constitution explicitly mentioned that Urdu and Bengali would be the state languages, recognizing the linguistic diversity of the country. Noting this dual language recognition is key to understanding the country’s early linguistic policies, a point that the QuizMaster of AnsweringExams.Com often emphasizes when discussing Pakistan’s constitutional history. Other options are incorrect because they either propose a single language or omit the recognition of both languages as official, which contradicts the historical and legal context of the 1956 constitution. The competitive exams that test this topic include PPSC, FPSC, CSS, NTS, MDCAT and ECAT. Practice more at AnsweringExams.Com.