Step 1: Understanding the Concept:
The Ramsar Convention is an international treaty focused on the ecological preservation and sustainable management of wetland ecosystems.
Step 2: Detailed Explanation:
The treaty was signed in the city of Ramsar, Iran, in the year 1971.
Its formal designation is the "Convention on Wetlands of International Importance especially as Waterfowl Habitat".
The primary ecological objective is to secure migratory pathways and habitats for wetland-dependent birds.
Wetlands provide critical seasonal nesting, breeding, and feeding grounds for millions of migratory waterfowl.
The convention defines wetlands to include areas of marsh, fen, peatland, or water, whether natural or artificial, permanent or temporary.
Therefore, while protecting wetlands as general water bodies, the formal legal focus is designated around "Waterfowl habitat".
Step 3: Final Answer:
The Ramsar Convention formally focuses on wetlands as Waterfowl habitats.
Thus, Option (C) is correct.