Final answer:
The student's question about causes of relationship dissolution illustrates the complexity of relationships, where various factors such as compatibility, personal circumstances, and emotional challenges play a role in whether a relationship endures or ends.
Step-by-step explanation:
The student's question concerns the causes of dissolution in relationships, particularly referring to the relationship between John and Mary which ended shortly after it began. The causes of dissolution are varied and context-dependent, but the provided information suggests a lack of compatibility or fundamental issues between the two that led to their separation. This can be understood through the lens of various literary examples provided, where we see characters facing relationship barriers, ranging from social status and financial differences, to family illnesses and personal psychological challenges. Each scenario highlights how different factors such as expectations, personal circumstances, and emotional states contribute to the complexity of relationships and their potential dissolution.