C would be the best answer, because they put more understanding into the sentences.
At present, the country is in need of a number of social workers
Answer:
If people killed all insects, Mother Nature would ascent to chaos. While there would no longer be mosquitos feasting on families during their summer camping trip, the frogs would no longer have their flies to eat. A lot of insects consume things humans throw out, things humans waste. Without them, the would would begin to fill with even more trash. Without insects, there would no longer be butterflies to catch during the spring or for the birds to eat. Insects bring bring a balance of utter annoyance and peace to Earth. Without them the balance disappears.
Explanation:
Peaceful Because the Definition of Serenity is The state of being calm, peaceful, and untroubled.
