When a derived class has two or more base classes, the situation is knows as:

A.

multiple inheritance

B.

polymorphism

C.

encapsulation

D.

access specification

When a derived class has two or more base classes, the situation is knows as multiple inheritance.

The above is almost the definition of multiple inheritance. (Note: Java does not support multiple inheritance.)

Polymorphism is when an object can be expressed in different ways.

Encapsulation is when a programming method or style where some or all the related methods of an object class are contained within the the class.

Access specification appears to be a general expression that has multiple meaning, e. g. does access mean the database package Access, or used in a general sense?