Answer:
C) It was unwise to attempt to convert Native Americans to Christianity.
Step-by-step explanation:
In the second sentence of the passage it states that the magistrates of Boston showed an "imprudent zeal" to "Christianize those heathen", which is the only answer consistent with challenging the prevailing British ideology. If we analyze the text further, the main issue is the causes of the Indian war so, what would be a strong enough factor that would motivate the Native Americans to fight? The forced conversion to Christianity would certainly be met with resistance and give them cause to fight.