What is the primary reason for a strong team bond?( please o need it fast )
O Shared experiences and common goals.
O Winning a championship.
O Binding together against the opponent.
O Similar levels of talent.

Shared experiences and common goals. You could be enemies and still win a championship, nothing would change the fact that you don't get along. Binding against the opponent adds more hate, and talent only affects performance. They are bound to get along if they can relate to each other.  

the last statement is correct i.e.

when your heart is not pumping enough blood around your body because your heart is severely failing, you may need an artificial heart. an artificial heart is a mechanical device, about the size of an orange, that is connected to your heart or implanted in your chest to or replace a failing heart.