Answer:
a scary b it looks like he fell off his bike c help him
OK so basically the location of the sinoatrial node will be in the right atrium
Hello!
Lets define each given choice.
Cooperation is working together with someone to complete a task and to benefit off of it.
Compromises are agreements following a dispute/argument that is reached from both sides of the party, in which they give something up to become mutual with one another.
So therefore, the answer is compromise.