Answer:
Evidences from the passage which best supports the inference that white sugar was rarer and more valuable than brown sugar are:
"The kind of sugar easiest to produce from cane is dark"
"wanted it to be as pure, sweet, and white as possible"
The first sentence shows that it was easier to produce dark sugar. Which will mean that this kind of sugar could be found in abundance whereas white sugar was not easy to produce and hence was rarer and more valuable.
The second evidence shows the demand of the wealthy people for white sugar. This proves that the sugar was rarer and more valuable.
Pre·scient
/ˈpreSH(ē)ənt/
adjective
having or showing knowledge of events before they take place.
The answer is B
