c# Array.IndexOf

using System;

private void OnMouseOver()
{
    if (Input.GetMouseButtonDown(0))
    {
        string[] nations = { "HD Ita", "HD Fra", "HD Ger", "HD Svi" };
        if (nations.Contains(name)) {
            Quiz.quizQuestion = Array.IndexOf(nations, name);
        }
    }
}