Which component is deployable using Metadata API?

The Metadata API enables the deployment of various customization components within Salesforce, specifically for metadata-driven management of configurations.

In this context, the Case Layout is deployable using the Metadata API. It represents a configuration for how the fields and sections of the Case object are arranged for users, and Salesforce provides the necessary definition in metadata format to handle its deployment across different environments, such as from a sandbox to production.

While Account Layouts and Console Layouts may seem similar, they have different handling mechanisms and may not be exposed in the same way through the Metadata API. Case Feed Layouts specifically relate to the Case Feed view and may also have restrictions when it comes to deployment. Thus, in this scenario, among the provided options, the Case Layout is the correct choice for deployment via the Metadata API.