Which of the following theories concerning global climate change is the most widely accepted?

AChanges in the global climate will lead to an increase in extreme weather and flooding.
BGlobal climate is changing due to burning of fossil fuels and deforestation.
CGlobal climate change will happen rapidly.
DExtra carbon dioxide and global warming will be beneficial.

Verified Answer :

So, there is a consensus that the increase in carbon dioxide will not be beneficial - we reject answer d)
 The biggest consensus is that b. Global climate is changing due to burning of fossil fuels and deforestation, but there is almost as big agreement that  global warming will lead to catastrophic weather anomalies - so actually answer a) is also correct.

I believe the answer is: B.Global climate is changing due to burning of fossil fuels and deforestation.

The Burning fossil foils created a pollution that can trap the sun heat from the sun from leaving the earth, which increase earth's average temperature. This phenomenon could be increased by trees because they absorb CO2 for their photosynthesis, so deforestation make this process become worse.