Which of the following rights allows individuals to gain access to their personal data held by organizations?

The right that allows individuals to gain access to their personal data held by organizations is indeed the right of access. This right empowers individuals to request and obtain confirmation from organizations regarding whether their personal data is being processed. Furthermore, if personal data is being processed, individuals have the right to access that data along with certain supplementary information. This ensures transparency and gives individuals control over their personal information, allowing them to understand how their data is being used.

The other choices serve different purposes in relation to personal data rights. The right to erasure allows individuals to request the deletion of their personal data under specific circumstances, but it does not provide access to the data itself. The rectification right enables individuals to correct or complete inaccurate or incomplete personal data, focusing on the accuracy of the information rather than access to it. The right to data portability allows individuals to obtain and reuse their personal data across different services, but it pertains to transferring data rather than accessing it directly from an organization. Thus, the right of access is the specific right that grants individuals the ability to view their personal data held by organizations.