Answer:
A. It emphasizes the large number of people that posts on social media can reach. ... It shows how the actions of people on social media can sway the actions of other users
Answer choice A is the answer
I think that it is B: Joyful, because there is no distress, such as, "Hurry, the queen has been killed!" or an angry description. The tone is very calm but the best answer would be joyful, as singing is usually joyful.