Answer:
A. OCD
Step-by-step explanation:
OCD, or Obsessive-Compulsive Disorder, is when a person gets unwanted thoughts (obsessions) or always feels the need to complete repetitive behavior (compulsions).
In reality this is way too little information to go on, and it would be irresponsible to make any assumptions about an individual based on what was provided here alone, but for the sake of merely answering a High School Bio question:
the answer is A. OCD.
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