Concept:A Jami' hadith collection covers many topics: beliefs, rulings, history, and manners.Explanation:Imam al-Bukhari's work is called al-Jami' al-Sahih. Imam al-Tirmidhi's work is called Jami' at-Tirmidhi. Both titles contain the word Jami'. Therefore, the works of both scholars are known as Jami' collections.Answer:C. Jami