Final answer:
A cognitive feature of a person with a somatoform disorder is having an unrealistic view of good health. Hence, option (d) is correct.
Step-by-step explanation:
A cognitive feature of a person with a somatoform disorder is that they have an unrealistic view of good health.
Unlike signs, symptoms of the disease are subjective and cannot be clinically confirmed or objectively measured. Symptoms of somatoform disorders include physical complaints without a known medical cause, and these individuals often have an unrealistic belief in having a serious illness or multiple illnesses.
For example, a person with a somatoform disorder may believe they have a serious heart condition despite medical tests proving otherwise. This cognitive feature of an unrealistic view of good health is seen in individuals with somatoform disorders.