How do conservationists make use of watersheds and ecozones

Ecozone is divergent environment wherein the biotic community, plants, animals and people and non-biotic community, lithosphere, atmosphere and hydrosphere communicate and process.
Moreover these tools aids in detecting ecological changes such as species extinction or climate disorders due to human activity.
Hence, Conservationists that are inclined and supports the proper usage of the natural resources are able to identify areas and resources that are being misused. They are also able to prevent and report such possible threats to the environment and helps maintain and sustain the ecological system. This will increase the chances to avoiding climate change to a great extent. 

Iknow what you are working on the correct answer is c

Except common history