Answer:
The best answer would be C. Is it multiple choice or select all that apply? My number one choice would be C.
Step-by-step explanation:
New foods did not kill European "versions" (D is wrong).
A lot of natives stuck with their own religions and cultures.
There were plenty of Europeans that traveled to the Americas but it took a bit longer than 50 years to bring more than millions.
The best answer is C because I know that plants, animals, and diseases between the two hemispheres had a detrimental yet positive impact at the same time. More variety, but the diseases harmed many at the same time. Choose C.