It shows the connection between ideas, sentences, or paragraphs. So the first one :)
Answer:
Arq states that critical thinking is essential for carrying out tasks that are out of the ordinary and requires the brain to work harder. It essentially included the analysis of a situations through facts and figures and getting to the underlying processes and causes.
It also includes the rational, skeptical and unbiased analysis of the problems at hand.
I hope the answer is helpful.
Thanks for asking.
The answer is D. Pertinent comes from the word pertain/pertaining, which means relevant.