Concept:Islam spread into North Africa through the military campaigns of Arab generals who moved westward after the conquest of Egypt.
Explanation:Tripoli is the capital of modern Libya and lies on the North African coast.
The Muslim soldier famous for leading the conquest of the Maghreb was ʿUqbah b. Nāfiʿ.
He commanded the Arab armies that advanced through Libya, Tunisia, Algeria, and Morocco.
Through his campaigns, Islam was introduced to Tripoli and the surrounding regions.
Saʿd b. Abī Waqqās is known for the conquest of Persia, not North Africa.
ʿAmr b. al-ʿĀṣ conquered Egypt and sent some expeditions westward, but the credit for bringing Islam into Tripoli is given to ʿUqbah b. Nāfiʿ.
So, among the listed options, the correct answer is clear.
Answer:B. ʿUqbah b. Nāfiʿ