The answer is: Im already tracer
Answer: Part A: D They separated into different groups long ago.
Part B: The answer is: "it also seems like they didn't mix much with outside groups until the arrival of Europeans in the seventh century"
Explanation: I took the test hope this helps!
A Must have stopped our car
Answrs: Part a) "Facts from a documentary.." This is talking about the benefits of artificial organs instead of donated ones.
Part b) "There are several ..." Because it is a sentence that is likely to precede facts. The others are opinions about how something 'SHOULD' be, and aren't presenting facts or claiming something.The first one 3ven says "I think..." which is clearly an opinion.