The correct answer is option 'B', Augustine.

Augustine of Hippo, also known as Saint Augustine, was a great Catholic bishop who spent most of his life in North Africa. He was born on November 13, 354, in Tagaste, a town in what is now modern-day Algeria. Augustine is one of the most influential figures in the history of Christianity and is widely regarded as one of the greatest theologians and philosophers of the early church.

Early Life:
Augustine grew up in a mixed religious household. His mother, Monica, was a devout Christian, while his father, Patricius, was a pagan. Despite being raised Christian, Augustine strayed from his faith in his early years and even embraced a hedonistic lifestyle. However, through the influence of his mother and the teachings of various philosophers, he began to question his beliefs and search for truth.

Conversion and Christian Ministry:
In 386, at the age of 32, Augustine underwent a profound conversion experience. He heard a voice telling him to "take up and read" the Bible, which led him to open the book and read a passage from the Epistle to the Romans. This experience marked a turning point in his life, and he committed himself to a life of Christian devotion. Augustine was baptized by Ambrose, the bishop of Milan, in 387.

Augustine's theological writings:
Augustine went on to become a prolific writer and composed numerous theological and philosophical works that have had a lasting impact on Western thought. Some of his most famous works include "Confessions," an autobiographical account of his early life and conversion, and "The City of God," a seminal work on Christian philosophy and the relationship between church and state.

Role as a bishop and influence in North Africa:
Augustine was ordained as a priest in 391 and later became the bishop of Hippo Regius, a city in modern-day Algeria. As bishop, he played a crucial role in defending orthodox Christian doctrine against various heresies, including Manichaeism, Donatism, and Pelagianism. Augustine also worked to promote education and the study of philosophy and theology in North Africa.

Conclusion:
In conclusion, Augustine of Hippo was the great Catholic bishop who spent most of his life in North Africa. His contributions to Christian theology and philosophy continue to be studied and revered to this day. Augustinian thought has had a profound influence on Western Christianity and has shaped the development of Christian doctrine and practice.