Answer:
The impacts of the diffusion of Christianity in the Americas can be seen in the fact that the repeated relocations have resulted in a wide diversity of Christian religious beliefs and practices.
Explanation:
A is not correct because it is not just one form of Christianity that is found in the Americas but there are loads of them.
B is not correct because the vast majority of the population in the Americas is Christian.
C is not correct because the Christian population significantly expanded, not the other way around.
D is correct because there were people from pretty much all types of Christian beliefs, leading to the creation of a very diverse Christian population, with some of them being the Catholics, Protestants, Lutherans, Methodists, Quakers, etc.
E is not correct because Christianity in the Americas is very diverse and it can be found among a lot of different ethnic groups.