Concept:The Ulul Azim are the five great prophets known for firmness, patience, and determination in conveying Allah’s message.
Explanation:"Ulul Azim" means "possessors of steadfastness".
They are the highest-ranking prophets in Islam.
They are five in number.
They are: Nuh, Ibrahim, Musa, Isa, and Muhammad (peace be upon them all).
Each of them endured great trials and remained resolute in their mission.
Answer:The Ulul Azim are five in number.
Therefore, the correct option is D.