Concept:The Ramsar Convention is an international treaty dedicated to the protection and sustainable management of wetlands.Explanation:It was signed on 2 February 1971 in Ramsar, Iran. The treaty came into force on 21 December 1975. Its main goal is to conserve wetlands and ensure their wise use. Wetlands include marshes, lakes, and coastal areas that support biodiversity and water resources. The convention does not focus on general biodiversity, global warming, or climate change. Instead, it specifically targets wetland conservation through the designation of Ramsar sites and national action plans.Answer:A. Conservation of wetlands