1. Who do we find out is dead? Why does this upset Katniss and Peeta?

Rue - Katniss and Peeta's best friend who died in the Hunger Games.

Explanation:

With a single arrow, Katniss kills the boy from District 1, who speared Rue and takes Rue's hand. Rue makes Katniss promise that she'll win for both of them, and then asks Katniss to sing her a song.

for the comment!

answer: this is easy, i found "it"

i will repeat the question again, "find it."

here, i located it.