Which one of the following Schedules of the Constitution of India contains provisions regarding anti-defection?

The Tenth Schedule of the Constitution of India contains provisions regarding anti-defection.

The Tenth Schedule, also known as the Anti-Defection Law, was added to the Constitution through the 52nd Amendment Act in 1985. It lays down the process by which legislators may be disqualified on the grounds of defection from the political party they were elected under.