Answer:
b. Yes - because it is causing personal distress
Explanation:
DSM - 5 is a standard classification of the mental disorder that is used by the mental health professionals in the U.S. DSM stands for Diagnostic and Statistical Manual for Mental Disorders. It is its 5th edition.
In the context, Christina had adopted 12 cats and she loves her cat very much. But her neighbors have been complaining about the foul smells and the sounds that are coming from her apartment. So Christina comes home every from work during her lunch time to check and feed the cat. It is causing a stress on her and she is constantly thinking about her cats and takes care of them.
Thus, according to DSM-5, Christina meets the criteria for developing a mental disorder which is based on DSM-5 standards as they are causing mental distress to Christina and she thinks about her cats all the time.