Who is best known for his testimony on climate change to congressional committees in the 1980s,Which helped raise wider awareness of the global warming issue?

Correct option is C

The correct answer is (c) James Hansen.
· James Hansen, a prominent American climatologist, is best known for his testimony before the U.S. Congress in 1988, where he warned about the dangers of climate change and global warming.
· Hansen's testimony was a key moment in the history of climate science, as it helped bring the issue of climate change into the public and political discourse.
· His work and testimony were pivotal in raising awareness about the human impact on the climate and the need for action to address global warming.
· Hansen was the director of the NASA Goddard Institute for Space Studies (GISS) and has made numerous contributions to the study of climate change.
· His research focused on the effects of greenhouse gases on global temperatures, and he has continued to be an advocate for climate action throughout his career.
Additional Information:
· Hansen’s 1988 testimony is considered a major milestone in the modern environmental movement, as it marked the beginning of widespread public attention to the issue of climate change.
· He has been a strong advocate for reducing carbon emissions and transitioning to renewable energy sources.