Some species are called "indicator species"because the loss of a population of such a species serves as an early warning of problems arising from pollution. Environmentalists tracking the effects of pollution have increasingly paid heed to indicator species; yet environmentalists would be misguided if they attributed the loss of a population to pollution in all cases. Though declines in population often do signal environmental degradation, they are just as often a result of the natural evolution of an ecosystem. We must remember that, in nature, change is the status quo. Which one of the following most accurately expresses the argument's conclusion?
A: The loss of a specific population is often the result of natural changes in an ecosystem and in such cases should not be resisted.
B: Environmentalists' use of indicator species in tracking the effects of pollution is often problematic.
C: The loss of a specific population should not always be interpreted as a sign of environmental degradation.
D: The loss of a specific population as a result of pollution is simply part of nature's status quo.
Choose A, B, C or D as your solution.
C