What is a characteristic of single inheritance?

Single inheritance is characterized by the concept that a subclass can inherit from only one superclass. This means that when you create a subclass, it derives properties and behaviors (methods) exclusively from one parent class. This model simplifies the inheritance structure, making it easier to understand and manage.

By having a single lineage, single inheritance avoids issues related to multiple inheritance, such as ambiguity and complexity that can arise when a subclass attempts to inherit from more than one superclass. This characteristic promotes a clearer hierarchy and reduces potential conflicts between inherited methods or attributes.

In summary, the defining trait of single inheritance is the restriction that a subclass can only directly extend one superclass, ensuring a straightforward inheritance model.