To declare a class-level named constant you declare it as . . . . . . . .

The correct answer is D. Static.

A static variable is a variable that is associated with a class, not with an instance of a class. This means that it is shared by all instances of the class. Static variables are declared with the static keyword.

For example, the following code declares a static variable named pi:

public class Math {
public static double pi = 3.14159;
}

The variable pi can be accessed from any method in the Math class. For example, the following code prints the value of pi:

System.out.println(Math.pi);

Static variables are often used to store constants, such as the value of pi. They can also be used to store data that is shared by all instances of a class.

The other options are incorrect because:

• A public variable is a variable that can be accessed from any class.
• A dynamic variable is a variable that is created on the heap at runtime.
• A private variable is a variable that can only be accessed from within the class in which it is declared.