Question Options:
A) free-floating anxiety.
B) a phobia.
C) an obsession.
D) a compulsion
Answer: Pedro's inability to stop thinking about the tune best illustrates the nature of an OBSESSION.
Explanation: An obsession can be defined as a compulsive or irrational preoccupation. It is to be preoccupied with a single topic or emotion.
Pedro's inability to stop thinking about the tune illustrates that he is preoccupied with a single topic which is the nature of an OBSESSION.