It's are because the phrase economics is used as a plural term in the following sentence.
Answer:
The detail that gives implicit information about the modern view of the Elizabethan landscape is:
Ranges of hills and mountains are obstacles to Elizabethan travelers and very far from picturesque features, you go out of your way to see.
Explanation:
The question is not complete since it does not provide the excerpt of reference, here is the excerpt:
Read the excerpt from The Time Traveler's Guide to Elizabethan England.
The underlying reasons for such differences are not hard to find. In a society in which people still starve to death, an orchard is not a beautiful thing in itself: its beauty lies in the fact that it produces apples and cider. A wide flat field is "finer" than rugged terrain for it can be tilled easily to produce wheat and so represents good white bread. A small thatched cottage, which a modern viewer might consider pretty, will be considered unattractive by an Elizabethan traveler, for cottagers are generally poor and able to offer little in the way of hospitality. Ranges of hills and mountains are obstacles to Elizabethan travelers and very far from picturesque features, you go out of your way to see. Hills might feature in an Elizabethan writer's description of a county because of their potential for sheep grazing, but on the whole, he will be more concerned with listing all the houses of the gentry, their seats, and parks.
By reading the description of the Elizabethan Landscape or what it would be easily described as such by modern view, it is implicit that the ranges of hills and mountains are not part of what the landscape of an Elizabethan traveler would focus on, they mention the wonders of the land for being productive as well as the marvelous constructions of the rich.
I would personally say the answer is D but I’m not sure !
