B; As far as the relation between humans and the environment, it is obvious how much they relied on it. Not only as a food source, but for economic growth and sustainability as well. The other answers make valid points but in the context of this question, the only one that even mentions the relation is B.
Korea explanation:there is still alot of controversy going on about korea and japan because of this reason
I'd say that yes, the coronavirus has impacted pollution levels. According to several reports, the pollution level in China has decreased.
This means that light from one star takes 100 earth years to travel to the other.
it's 5.879 × 10^14 miles