How to call the logic of a class into another class?

I am new to c# game development and just start. I decided to start with the basics, Console Applications.

I am try trying to recreate a game created by Lincoln Li and it's called Mr Sprinkle's Great Escape.

There are 2 classes Stats (An attribute system) and Death where they kind of linked together. Here is the snippet of the code:

Stats

private static int thirst;

    static public void ThirstLevel()
    {
        Console.WriteLine("Your thirst level is: {0}", thirst);
    }

    static public void DecreaseThirstLevel()
    {
        thirst--;
        Console.WriteLine("Your thirst level is: {0}", thirst);
        if (thirst == 20)
        {
            Console.WriteLine("Your thirst level is 2/3 gone!");
            Console.WriteLine();
            Console.WriteLine("You're getting thirsty!");
            Console.WriteLine();
        }
        else if (thirst == 10)
        {
            Console.WriteLine("Danger! Danger! Your thirst level is 1/3 gone!");
            Console.WriteLine();
            Console.WriteLine("Better go get some water!");
            Console.WriteLine();
        }
        else if (thirst <= 0)
        {
            Console.Clear();
            Death.DeathByThirst();
        }
    }

Now my question, is how will I implement Death.DeathByThirst in the Death class. How will I proceed to call the logic of the Stats class to Death Class?

So far I'm stumped here :/

 static public void DeathByThirst()
    {
            ???
    }

Your help will be appreciated! :)