The carbon footprint is defined as a measure of total greenhouse gas emissions caused directly or indirectly by what four things?
A) a factory, an office building, a warehouse, or a truck
B) an organization, a product, an event, or a person
C) an organization, a product, an animal, or a person
D) an organization, a government, a product, or a person
E) a product, an event, a person, or an animal
Answer: B