Your answer is A. racers, because racers is direct.
Aslan was there first in the area of the Stone Table, and later he moves to another place for the White Witch to use this area.
The denotative definition of a word is its literal meaning. This would be the meaning one would find in the dictionary.
By contrast, the connotative definition is the meaning associated with the word. It is the implied meaning of the word.
For example, the words in bold have the same denotation but different connotations:
-- a beautiful woman
-- a handsome woman
-- a pretty woman
While all these words mean the same thing, they do not have the same associations.
I would go with,
The stories time period
The characters environment
And where the story takes place
Or if it is an autobiography, then you can also look at where the author is from! I hope this helps!