Answer:
Right Ventricle.
Step-by-step explanation:
The heart is an important of our circulatory system, its job is to impulse blood around the body. To do that, the heart has two parts called ventricles, it has a right ventricle and a left ventricule.
Specifically, the right ventricle is where the desoxygenated blood comes in to be pumped to the lungs, where it's gonna be mixed with oxygen.
Therefore, the right answer is right ventricle.