Final answer:
A person who experiences fearfulness and difficulty in adjusting to surroundings, while in contact with reality, likely has an adjustment disorder, which occurs in response to an identifiable stressor.
Step-by-step explanation:
A person who is in contact with reality but is fearful and has difficulty adjusting to surroundings is considered to have an adjustment disorder. This condition involves emotional or behavioral symptoms that develop in response to an identifiable stressor occurring within three months of the onset of the stressor. These symptoms or behaviors are clinically significant, as evidenced by distress that is out of proportion to the severity or intensity of the stressor, and significant impairment in social, occupational, or other important areas of functioning.
Unlike generalized anxiety disorder, which involves persistent and excessive worry about various domains of life, or obsessive-compulsive disorder (OCD), characterized by unwanted, repeated thoughts and repetitive behaviors, the adjustment disorder is specifically linked to stressor-related issues. Social anxiety disorder typically involves a fear of social situations due to potential embarrassment, judgement, or scrutiny by others. Hence, the correct answer to the question is d) Adjustment disorder.