Answer:
A. an analogy
Explanation:
Page 90 of 150 PF Downloaded Lesson:
Analogies are representations that help in understanding a problem, a
set of circumstances, or even an unfamiliar object. In using an
analogy, you might compare something you’re familiar with to
something you’re less certain about in an attempt to understand the
unfamiliar thing. Or you may form an analogy to make a concept clear
to someone else. For example, to give employees an idea of what’s
expected of them, a supervisor might refer to a good department as “a
hive of busy bees.” To help the people you supervise get an idea of
the mental attitude you would prefer they adopt, you could refer to a
clear, sparkling mountain stream as an analogy of an open, flowing
mind—nothing hidden at the bottom, always moving toward new
destinations and new ideas.