Why Is Preservation of the Environment Sometimes Like a Prisoner's

Multiple Choice

Why is preservation of the environment sometimes like a Prisoner's Dilemma?

A) The world's population is "imprisoned" and cannot escape the effects of environmental degradation and global warming.
B) Transnational advocacy networks can free the world's population from the effects of environmental degradation and global warming.
C) Individuals have no interest in cooperating and would rather "defect" by continuing to pollute,if it suits their needs.
D) Individuals have a shared interest in cooperating but would rather "defect" since their own efforts would have little effect on overall pollution levels.