I think the correct answer from the choices listed above is option B. <span>As of 2009, the largest and most widespread religion in the world was Christianity. Almost in all countries, Christianity is present so it should be the answer. Hope this answers the question. Have a nice day.</span>
The answer is D. all of the above
Muhammad is the prophet that is seen as the most important in the Islam, as well as the one that formed this religion. Before Muhammad started to have the revelations and focus on preaching the word of God/Allah, he did had a profession. His profession was a merchant. He was a good merchant from what is known, and he had a good training for this profession since early age. Muhammad was active as a merchant in the eastern Mediterranean region in general which was an excellent location for gaining wealth. During his merchant days, he managed to get in contact with lot of Christians, and that influenced him a lot, later influencing his life and the lives of millions of people in a way that he probably didn't even dream of.
Because no one was taxing them on the boats