The World is Getting Warmer
The correct answer is A. The world is getting warmer. “Climate experts” refers to the 274 authors of the IPCC’s Fifth Assessment Report (AR5), published in 2014 by the Intergovernmental Panel on Climate Change. Here's what the panel of experts predicts:
Surface temperature is projected to rise over the 21st century under all assessed emission scenarios. It is very likely that heat waves will occur more often and last longer, and that extreme precipitation events will become more intense and frequent in many regions. The ocean will continue to warm and acidify, and global mean sea level to rise.
Ninety-seven percent of climate scientists agree that climate-warming trends over the past century are very likely due to human activities. Most of the leading scientific organizations worldwide have issued public statements endorsing this position.
Click here for a partial list of these public statements and related resources.