question: In 1783, Europe was unusually cold and foggy. The rain was acidic. Which event most likely caused the unusual climate in Europe that year?
choices.text: A logging company deforested millions of acres in South America. A major earthquake and tsunami changed the path of the Gulf Stream. A major volcanic eruption released ash and sulfur gas into the atmosphere. An increase in the use of automobiles released more carbon dioxide into the atmosphere.
choices.label: A B C D