Answer:
C. The preacher is confused.
Step-by-step explanation:
In these lines, we can see that the preacher is confused about his faith and his motivations. He tells us that, although he continues to hold the same beliefs he has always held, the "spirit" of them is less strong. He tells us that he is unsure about a lot of things and that because of this, sometimes he preaches without really knowing what he is preaching about. This makes him feel unprepared to guide the people.