Answer : 3. "Ireland"
Explanation :

Lough Neagh, the largest freshwater lake in the British Isles, will face a dangerous ecosystem collapse in 2024, marked by the absence of its native fly. Located in east-central Northern Ireland, covering 392 km² with a 5,700 km² catchment area, it serves as an important water source, supplying over 40% of Northern Ireland's drinking water. . Known for being Europe's largest wild eel fishery and hosting 100 bird species, it holds cultural and archaeological importance as a jewel in the region.