Answer:
a) clinical psychology
Explanation:
Clinical psychology: The term clinical psychology is defined as a field of psychology that is considered as a professional specialty and is concerned with treating and diagnosing brain-related diseases, behavioral problems, and emotional disturbances.
In other words, clinical psychology is defined as a combination of theory, science, and clinical knowledge to gain the preventing measures, understanding, and relieving different psychologically-based dysfunction or distress and therefore promoting personal development and subjective well-being.
In the question above, Ashya should work in the area of clinical psychology.