They probably meant syria a country at war. if not than it is a girls name.
I think it is C, because if I'm right present principal is something that is happening presently? If so, C would be the answer because they "are doing" the exercises right now in context.
This section refines and serves the author’s purpose because It lets the reader know that the authors are going to describe how honey relates to the story of sugar. This book is about the history of sugar and the changes and consequences that sugar brought to humanity.
