Final answer:
Bradford's personal convictions in 'Of Plymouth Plantation' indicate that he believed d) the pilgrims had God on their side.
Step-by-step explanation:
In 'Of Plymouth Plantation,' Bradford demonstrates his personal convictions that the pilgrims had God on their side.
He refers to Squanto as 'a special instrument sent of God,' indicating that Squanto's arrival and assistance to the pilgrims were a result of divine intervention.
This suggests that Bradford believed in the providential nature of the pilgrims' settlement and attributed their survival and success to God's favor.