The correct answer is B.
The former head of the Christian church was Mr. Brown, who was gentle and took his time to talk and listen to the natives. He gained their trust and respect, and convinced them to send their children to his school.
However, his hard work affected his health and had to return home, leaving his place to Reverend James Smith.
Mr. Smith did not like the way Mr. Brown was handling things, and decided to put the church's down a more traditional path, revealing his fanaticism and intolerance.