Which of the following was the MOST important reason why the Easter Island society collapsed?
a. A change in precipitation patterns, combined with the island's naturally poor soils, led to a collapse of the islanders' agriculture.
b. The islanders introduced a new invasive species to Easter Island that, in the absence of predators, indirectly led to the loss of their sea resources.
c. The Islanders lost their main meat supply because their slash and burn agriculture led to the loss of the forest animals they hunted for meat.
d. Contact with European societies introduced new diseases to Easter Island that the island population had not previously been exposed to.
e. Reduced upwelling along the South American coast resulted in climate change that caused a near total collapse of the island's ecosystems.
