Which statement best describes the inheritance example with Vehicle and Motorcycle?

• A. A Vehicle is a subclass of Motorcycle.
• B. Inheritance means two unrelated classes share no behavior.
• C. Inheritance means copying methods manually into the subclass.
• D. A Motorcycle is a type of Vehicle and inherits properties like taking in fuel and moving.

Answer: (D)

The key idea here is how inheritance creates an is-a relationship and enables code reuse. A Motorcycle being a type of Vehicle means the Motorcycle inherits what Vehicle can do—methods and properties that handle common behavior like taking in fuel and moving. Because of this, the Motorcycle automatically has those capabilities without redefining them, and it can also add its own specialized behaviors or adjust how inherited actions work.

This is why the statement that describes a Motorcycle as a kind of Vehicle and inheriting those behaviors best fits inheritance: it captures both the hierarchical relationship and the reuse of shared functionality. The other ideas don’t fit because they misstate how inheritance works—either flipping which class is the subclass, claiming inheritance eliminates shared behavior, or implying you must copy methods manually rather than rely on automatic inheritance.