Which of the following best characterizes an ecological footprint?

C. A measure of environmental impact.

Explanation:

ecological footprint is an individual's impact on environment.

Measure of Land area best characterises an ecological footprint.

Explanation:

Ecological footprint is the measure of how much land we require and how much we use. It is measured in the global acres and global hectares. The size can change with time, depending upon the population,consumption level, technology and use of resources.  

It is used to take the focus over apparent unsustainability of current practices and inequalities in resource consumption. It Measures the requirement of biologically productive region or area like croplands, forests and fishing grounds but not glaciers, open ocean and  deserts,

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.

you need more balloons