A class-level variable is declared using . . . . . . . . keyword.

The correct answer is: Static

A class-level variable is a variable that is declared inside a class but outside of any methods or properties. It is accessible to all methods and properties in the class, and its value is shared by all instances of the class.

A class-level variable is declared using the static keyword. For example:

“`class MyClass
{
static int myVar;

public void MyMethod()
{
    Console.WriteLine(myVar);
}

}
“`

In this example, myVar is a class-level variable. It can be accessed from any method in the MyClass class, and its value is shared by all instances of the class.

The other options are incorrect because:

• Private is a keyword used to declare a variable that is only accessible to members of the class in which it is declared.
• Public is a keyword used to declare a variable that is accessible to all code in the program.
• Dim is a keyword used to declare a variable in Visual Basic.

I hope this helps! Let me know if you have any other questions.