Which entity has the power to supervise and control the police forces all over the country?

The National Police Commission (NAPOLCOM) is the entity with the authority to supervise and control the police forces across the country. NAPOLCOM’s primary role is to ensure that police operations are conducted within the framework of the law and to maintain police professionalism and accountability. It oversees various aspects of law enforcement, including the planning, coordination, and implementation of national police policies.

This commission is also responsible for the training and appointment of police personnel, as well as conducting investigations into police misconduct, ensuring that law enforcement agencies adhere to established standards and regulations. Thus, NAPOLCOM's supervisory functions are critical for maintaining the integrity and effectiveness of police forces nationwide.

On the other hand, the National Bureau of Investigation (NBI) primarily focuses on investigative and law enforcement services rather than overseeing police operations. The Armed Forces of the Philippines (AFP) pertains to military matters and does not supervise civilian police forces. Lastly, the legislative branch can create laws and regulations that affect law enforcement but does not have direct supervisory control over police forces. Therefore, NAPOLCOM is indeed the correct choice as the supervisory body for police forces in the country.