[BioHazard90]

class MyProgram
{
    static void Main()
    {
        int[] integers;            // declare array
        integers = new int[10];    // size array
    }
}

In which line is the array actually instantiated?

[CrazeD]

int[] integers;

I believe this.

[jaeusm]

Instantiated means an instance of a type has been created. In C#, that is typically accomplished using the 'new' keyword. In your specific case, the second line of code in the Main method instantiates the array.