Correct Option: D

In Switzerland Swiss voters can demand a binding referendum at federal, cantonal and municipal level. They are a central feature of Swiss political life. It is not the government’s choice whether or when a referendum is held, but it is a legal procedure regulated by the Swiss constitution. The right of initiative is also used at the cantonal and communal level in Switzerland. If the necessary number of supporters is reached, the initiative will be put to a referendum about two or three years later; the delay helps prevent short-term political moods from getting into the constitution.