Final answer:
The definition of mental pathology as 'he has a disease' fails to capture the complexity and multifactorial nature of mental disorders and inaccurately implies they may be curable or contagious.
Step-by-step explanation:
The shortcomings of the definition of mental pathology as simply 'he has a disease' are both that it may imply the disease is curable or contagious and that it suggests a third variable is the cause, such as behavior. Thus, the correct option is c. - both a and b. The term 'mental pathology' pertains to the study and diagnosis of mental disorders, which can include a range of conditions affecting mood, thinking, and behavior. Mental illnesses are complex and multifactorial; they may stem from genetic, environmental, psychological, and biological factors. The broad definition 'he has a disease' fails to acknowledge this complexity and the variability in manifestations and causes of mental disorders. Further, it can perpetuate stigma by suggesting mental illnesses are akin to contagious diseases, which they are not. It's also important to note that not all diseases, mental or otherwise, are necessarily curable, although many can be managed or treated. The simplistic definition can lead to misunderstandings about the nature of mental illness and the challenges involved in treatment and support.