Explanation: There are typical expenses in the department of the nursing operation budget which are described as the revenues or expenses that are expected in a period of time . This includes diet related expenses, wages and stipend as human resources expenses .They also have medical records expenses in the nursing department and other allowances including community relations. Thus all the given option are correct.
Because Astronomers have well-tested theoretical models that explain how a star evolves over the course of its life as well as well-tested theoretical models that explain how a star evolves over the course of its life.