Which of the following adopted a law on data protection and privacy for its citizens known as 'General Data Protection Regulation' in April 2016 and started implementation of it from 25th May, 2018?

1. The question describes a comprehensive law on data protection and privacy for citizens, known as the 'General Data Protection Regulation' (GDPR). 2. It specifies the timeline: adopted in April 2016 and implementation started from 25th May, 2018. 3. This description accurately matches the GDPR enacted by The European Union. 4. The GDPR replaced the earlier Data Protection Directive and established a unified framework for data protection across all EU member states. 5. Australia, Canada, and The United States of America have their own data privacy laws and regulations, but they did not adopt the specific regulation known as GDPR with this timeline.