The Stockholm Convention on Persistent Organic Pollutants (POPs) was signed in the year-

Explanation

Explanation: Stockholm Convention : It was signed in the year 2001 and came into effect from 2004. It is a multilateral environmental agreement to protect human health and the environment from persistent organic pollutants (POPs) . Basel Convention : It is an international treaty signed in 1989 and came into effect from 1992. it was designed to protect human health and the environment against the adverse effects of hazardous wastes . it regulated the movements of hazardous waste between nations, and specifically to prevent the transfer of hazardous waste from developed to less developed countries. Rotterdam Convention : It was signed in the year 1998 and came into effect from 2004. It is a multilateral environmental agreement to promote shared responsibilities in relation to the importation of hazardous chemicals.