Abowhunter's quarry is antelope, deer, black bear, or other big game of similar size or smaller. which shot offers a good chance for a clean kill?

Bowhunter's shot in clean kill would be aiming for the lungs (both the left and right lung or one at a time) and heart. Hitting the neck part of the prey is also acceptable if you can't access the two areas.

He want to contact the red cross/red crescent because they are the main non profit organization that deals with disasters around the world 

Idk tbh maybe u should google it