Final answer:
The Helsinki Convention for the Protection of the Marine Environment of the Baltic Sea Area is a treaty focused on the conservation and sustainable use of the Baltic Sea's marine environment.
Step-by-step explanation:
The Helsinki Convention for the Protection of the Marine Environment of the Baltic Sea Area is a treaty aimed at the conservation and sustainable use of the marine environment in the Baltic Sea area. It addresses issues such as biodiversity protection, pollution prevention, and scientific cooperation among the riparian countries to enhance the health of the sea. This convention is an example of international legislative efforts similar to CITES and the Madrid Protocol, focused on protecting marine ecosystems and ensuring sustainable management of their natural resources.
Hence, the correct option that defines the Helsinki Convention is option 1: 'A treaty for the conservation and sustainable use of the marine environment in the Baltic Sea area.'