Name the organisation which is campaigning for banning of landmines at international level?

Human Rights Watch

The correct answer is Option 3 - Human Rights Watch

Human Rights Watch is another international NGO involved in research and advocacy on human rights. It is the largest international human rights organisation in the US. It draws the global media’s attention to human rights abuses. It helped in building international coalitions like the campaigns to ban landmines, to stop the use of child soldiers and to establish the International Criminal Court.