In which three cases would you need a Visual Builder service instance to deploy your...

Full Detailed in Depth Explanation:

A Visual Builder (VB) service instance is a stand-alone runtime environment separate from Fusion Apps. Option A is correct because external users without Fusion access require a VB instance to host the app. Option B is valid as VB instances support REST integrations with external databases using basic authentication. Option C is accurate because vanity URLs are supported by VB instances for custom domains. Option D is incorrect because Fusion Apps REST services are typically accessed via AppUI extensions within Fusion, not a separate VB instance. Option E is wrong as integration into Fusion menus relies on AppUI extensions, not a stand-alone VB instance.