Answer:
The description for the given question is described in the explanation section below.
Explanation:
a...
interface Shape
{
public double getArea(); // creating a function
public double getPerimeter(); // creating a function
}
b and c...
- I preferred Interface although abstract classes are being used when children's classes associate certain aspect methods and variables and because all classes represent a certain method throughout the specific solution, not instance variables, it would be easier to construct an interface.
- Almost all of the period interfaces are favored because they have multiple inheritance capabilities.
