The correct answer is option 4, Naqshbandi. The Naqshbandi Sufi order is often considered the most orthodox among the options listed. This order traces its lineage back to the teachings of the Prophet Muhammad, placing a strong emphasis on strict adherence to Islamic laws and practices. Naqshbandi Sufis prioritize following the Sharia (Islamic law) and focus on inward spiritual growth through practices such as dhikr (remembrance of God), meditation, and contemplation. They believe in the importance of maintaining a balance between the path of the Sharia and the path of the Sufi mystical tradition. This emphasis on orthodoxy and conformity to Islamic teachings distinguishes the Naqshbandi Sufi order from some other orders that may advocate more flexibility or incorporate influences from other spiritual traditions.