Answer:
Option B, building channels to control water flow in the Everglades
Step-by-step explanation:
The nesting pattern of wood storks is highly dependent on the pre drainage condition of Everglades region.
However in Everglades region several canals, ditches and roads have been constructed in recent times due to which the drainage pattern and wetland fragmentation is disturbed through out the region. This has lead to the reduction in the nesting activity of Wood Stork across the Everglades which has ultimately caused reduction of wood stork population.
Hence, Option B is correct.