Answer: C. Ecological footprint
Step-by-step explanation:
The ecological footprint can be define as the total amount of biological productive area required by the human beings so as to produce goods and service and to lead a healthy lifestyle. It also measures the amount of wastes generated after the use of natural resources and the impact of the human society on the surrounding environment in order to generate goods and availing services.
On the basis of the above explanation, ecological footprint is a tool that measures an individual's impact on the environment.