Final answer:
The best course of action for an organization planning to expand into the European market is to complete a quantitative risk assessment to identify potential risks and compliance requirements, especially concerning data protection laws like the GDPR.
Step-by-step explanation:
The BEST course of action for an organization based in the United States planning to expand into the European market would be to complete a quantitative risk assessment. This will help identify the potential risks and challenges associated with the expansion and allow the organization to make informed decisions.
European Union has enacted strict data protection laws under the GDPR, which applies to both private businesses and government agencies. By completing a risk assessment, the organization can assess its compliance with these laws and determine any additional requirements that need to be established as a result of the expansion.
Completing a security questionnaire focused on data privacy may also be necessary, but it is not the best course of action on its own. It can be part of the risk assessment process, but a comprehensive risk assessment would provide a more thorough analysis of the organization's needs.