Correct Answer:
C. Islamic way of life
Article 31 of the Constitution of Pakistan specifically relates to the Islamic way of life. Its primary objective is to enable Muslims to order their lives in accordance with the fundamental principles and basic concepts of Islam, and to provide facilities for them to understand the Holy Quran and Sunnah. Option A, 'Equality of citizens,' is covered by Article 25. Option B, 'Right to education,' is addressed by Article 25A. Option D, 'Protection of minorities,' is covered by other articles, such as Article 36, making them incorrect for Article 31.