Which Is the Single Greatest Obstacle to Slowing Climate Change

Multiple Choice

Which is the single greatest obstacle to slowing climate change?

A) the growing population of the poorer nations in the world
B) proper climatic changes
C) having scientists decide on a definition of climate change
D) meeting energy needs, particularly in energy-hungry countries such as the United States, China, and India
E) a lack of data portraying the effects of climate change