Hello there!
Answer: Subjective discomfort
The reason why the answer choice "subjective discomfort" would be the correct answer because this would be the right criteria that matches with what Maria is going through, and it's the best fit for her case.
She is experiencing anxiety, that would be the behavior that she's feeling distress about, due to the fact that she probably has seen some things while working at the factory.
This would definitely be an example of abnormality due to the fact that she's fearing anxiety attacks. Being anxious is feeling a fear, but feeling fear for a fear is not a good mix, which makes it an abnormality.
I hope this helps!
Best regards,
MasterInvestor