In a health data platform architecture, which statement correctly describes the function of an architectural layer?

### Why this is right - **A** is correct: the identity and trust layer establishes verified identities, different access rights, and auditability. - **B** is correct: the vault is described as an encrypted record that patients own and control access to. - **C** is correct: the gateway links the platform to existing provider systems and structures incoming information. ### The concept The layers have distinct jobs. Identity establishes who is acting, the vault holds a patient's records, and the gateway connects existing provider technology to the platform. The translation layer gives data shared meaning, while consent and permissions determine who may use which information and for what purpose. These functions work together, but one does not replace another. ### The other options - **D. The translation layer replaces the need for consent and permissions.**: Shared meanings do not grant access. The white paper describes consent and permissions as a separate layer. ### Terms - **Gateway**: A connection point that lets separate systems exchange information. - **Auditability**: The ability to review recorded actions and determine what happened. ### Remember Meaning, identity, storage, system connections, and permission are separate infrastructure responsibilities.