An object's attributes are references to objects of other classes. Embedding references to objects of other classes is a form of software reusability known as $\_\_\_\_\_\_\_\_$ and is sometimes referred to as the $\_\_\_\_\_\_\_\_$ relationship.

Question $10$ options:

inheritance, "has a$"$

inheritance, $"$is a$"$

composition, $"$is a$"$

composition, "has a$"$