Taking into Account All of the Criteria That Should Be

Short Answer

Taking into account all of the criteria that should be used in evaluating factual claims, which source of evidence below has the greatest expertise or best source qualifications?
a. "Around the year 2030 … we will be in a position where we set off an irreversible chain reaction beyond human control, that will most likely lead to the end of our civilization as we know it."
Greta Thunberg, Swedish climate activist, aged 17, who organized the "School Strike for Climate Change" and was nominated for a Nobel Peace Prize, in a speech presented in 2019.
b. "If you ask me how scared I am of climate change ruining the planet, I have to say it is near the bottom of my worries. If science is right … we'll find ways to scrub the atmosphere as needed. We always find ways to avoid slow-moving dangers."
Scott Adams, Dilbert creator/cartoonist (2015, December 5). https://blog.dilbert.com/2016/12/05/the-non-expert-problem-and-climate-change-science/" change-science/
c. "Climate change is taking an increasing toll on the nation's environment, health and economy, and the damage will intensify over the century without swift action to slash greenhouse gas emissions."
Tony Barboza, (2018, November 24). Climate Report Warns of Bleak Future. Los Angeles Times, p. A-1.
d. "The consensus that humans are causing recent global warming is shared by 90%-100% of publishing climate scientists according to six independent studies by co-authors of this paper."
Cook, et. al. (2016). Consensus on consensus: A synthesis of consensus estimates on human-cause global warming. Environmental Research Letters, 11(4), 048002.
e. "I've starred in a lot of science fiction movies and, let me tell you something, climate change is not science fiction, this is a battle in the real world, it is impacting us right now."
Arnold Schwarzenegger, actor and former governor of California. (2015, July 6), as cited in Time Magazine. http://time.com/3966610/arnold-schwarzenegger-climate-change/