Select the most appropriate option to fill in blank number 3.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. vicious.
Vicious refers to something harmful or aggressive. In the context of global warming, the phrase "vicious loop" refers to a dangerous, self-reinforcing cycle, where the effects of global warming (such as the melting of the Arctic) further increase global warming through the release of greenhouse gases.
The other options don't fit as well.