Answer:
Organ Physiology.
Explanation:
The study of organs of a body, its functions along with cells and tissues is referred to as Organ physiology. In this study whole organ functions are observed and studied.
Systematic physiology is study related to specific organ functioning such as cardiovascular system etc.
Regional anatomy is study related to various divisions of body and relation between various structures of arteries, veins and muscles.
Option B. A man pushes a couch across the room is the answer.
Nuclear fusion<span> is the process of combining two lighter nuclei into a single heavy nucleus (part of an atom). This process is also called a nuclear reaction and it releases a large amount of energy. <span>In medium-sized stars such as the Sun, nuclear fusion almost always means the fusing of hydrogen atoms to form helium, but larger stars can produce elements as heavy as iron. </span></span>