Correct Answer:
C. 279 AH
The correct answer is 279 AH. Imam Tirmizi, full name Abu Isa Muhammad ibn Isa at-Tirmizi, was a renowned Persian Islamic scholar and collector of hadith. He is best known for his compilation of hadith known as Jami' at-Tirmizi, which is one of the six canonical hadith collections in Sunni Islam. He passed away in the year 279 AH (corresponding to 892 AD) in Tirmidh, located in present-day Uzbekistan. Options A, B, and D are incorrect as they do not represent the historically accurate year of his demise.