The correct answer is C. Authority.
Authority is the power to make decisions, give orders, and direct the work activities of others. It is based on the position that an individual holds in an organization, and it is granted by those who have the power to do so. Authority can be formal or informal, and it can be based on expertise, experience, or position.
Power is the ability to influence others to do what you want them to do. It can be based on authority, but it can also be based on other factors, such as charisma, persuasion, or coercion.
Influence is the ability to affect the behavior of others without using force or coercion. It is often based on trust, respect, or shared values.
Command is the act of giving orders to others. It is usually associated with authority, but it can also be used by individuals who do not have formal authority.
In conclusion, authority is the force that makes an individual eligible to make decisions, give orders, and direct the work activities of others. It is based on the position that an individual holds in an organization, and it is granted by those who have the power to do so.