Answer:
Option D, Migrating bird populations and the carry capacities of local animal species
Step-by-step explanation:
The government will provide grant only when the city will make efficient measures to cater the potential risk to the surrounding animals. With such norms, it becomes essential for the city to take suitable preservation steps. Therefore, the first effective measure to be taken by government is to determine the total strength of surrounding animals along with migrating species. Once the strength of the animals is known, subsequent preservation strategies could be formulated.
Hence, option D is correct.
Other than option D, none of the options indicate any measure that could help in preventing the surrounding animals.