What in Muhammad's background may have influenced his acceptance of monotheism?
a. Muhammad's family had always been monotheistic
b. The Arab peninsula had equal numbers of monotheists and polytheists
c. Muhammad's wife had been raised as a monotheist
d. Muhammad was engaged in long-distance trade where he came into contact with monotheists
It would be that "d. Muhammad was engaged in long-distance trade where he came into contact with monotheists" that likely would have influenced his acceptance of monotheism, since this allowed for him to gain new and challenging points of view.