Final answer:
The GDPR applies to any entity that processes the personal data of European Union citizens.
Step-by-step explanation:
The General Data Protection Regulation (GDPR) applies to any entity that processes the personal data of European Union citizens.
The GDPR is a comprehensive data protection law enacted by the European Union to provide extensive privacy rights and protections for individuals. It applies to both private businesses and government agencies, regardless of their location. Therefore, option A is the correct answer.