Universal Containers wants to implement a new Experience Cloud site to support its customers.

A Customer Account Portal experience (Customer Service template) is the recommended approach when an organization needs to:

Support authenticated users (registered customers) who can create, view, and manage cases securely.

Handle large-scale user volumes (millions of customers).

Provide personalized functionality , such as saving favorite articles and accessing case history.

Allow public (unauthenticated) access to search Knowledge articles.

Option B ( Help Center ) supports anonymous article browsing but lacks robust authenticated features like case management or personalization.

Option C ( Microsite LWR ) is designed for lightweight, static content and marketing use cases, not authenticated service portals.

Referenced Salesforce Materials:

Service Cloud Consultant Exam Guide – Service Cloud Solution Design Domain.

Salesforce Help: “Customer Account Portal Overview and Configuration.”

Salesforce Experience Cloud Implementation Guide – Selecting the Right Template.