Answer: I believe it's A
Step-by-step explanation:
I'm taking the test as well. But if it were to be C, the passage would've argued and get their point across to the reader. However, the passage is only informing readers about the global expansion of sugar and human knowledge. There is no evidence or tone in which the author would use to create an argument that would persuade readers that sugar leads to multiple consequences. Even so, it is true that sugar DID lead to multiple consequences, but it doesn't make any sense why the authors would argue about an event that has already taken place.
In addition, letter A seems to be the ideal choice among the four because the entirety of the passage informs the reader how sugar led to exchange of ideas from different cultures. Meaning that sugar was widely used around the world.