Answer:
c. Ecosystem science
Explanation:
Sustainability is incorrect because it means the existence of resources for a long term.
Environmental science is incorrect because it is the branch of science that studies the processes and interactions that affect the environment.
Biodiversity science is incorrect because it is the study of various species that occupy a particular area.
The correct option is c. Ecosystem science is the study of community of living organisms, how they interact with themselves and with non-living components of the community.
