I know the answer is not A nor B, because they are not pros, they are cons. I think the answer would be C.
B. belief in the holy trinity.
Explanation:
I myself am a Muslim. Ramadan is a time that lasts a month and you fast everyday. We pray 5 times a day from early in the morning up to late night. we try to give to those in need whenever possible. The Holy trinity is a christian thing. it is the father(god) the son(Jesus) and the holy spirit(Jesus' soul when he died)
Most likey trains and drill power tools
That is true. By making travel on rivers more efficient.