The word aqueduct comes from the Latin words "Aqua" meaning water and "ducere" meaning to lead. Then it becomes the Latin word "aquae ductus" meaning conduit. Therefore, the meaning of the word aqueduct is a structure that leads water. The correct answer is option B.
Basically the four kinds of info that a writer must document are:
Direct quotations
Summary of a discussion
Information
Writer constructs a diagram from data provided by others
These four are essential for a writer to document. Hope this can help a lot