Answer:
The correct answer is option B, An ecological footprint is determined by measuring carbon dioxide emissions for a given region.
Step-by-step explanation:
Ecological foot print is basically the measure of amount of resources required by human population to cater the carbon dioxide produced from fossil fuel
The ecological footprint is evaluated by measuring the amount of Productive land area and Sea area required by a human for carrying out all productive activities which shall include use of resources, production of goods, waste generation and reduction and pollution emission in lieu to address the increased carbon content in atmosphere.