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    Question

    In C++, to achieve runtime polymorphism, a base class

    method must be declared with which keyword?
    A static Correct Answer Incorrect Answer
    B final Correct Answer Incorrect Answer
    C abstract Correct Answer Incorrect Answer
    D virtual Correct Answer Incorrect Answer
    E override Correct Answer Incorrect Answer

    Solution

    In C++, for a method to be overridden polymorphically (i.e., for dynamic dispatch to occur), the base class method must be declared as virtual. If it's not virtual, the method call will be resolved at compile time based on the pointer/reference type, not the actual object type.

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