A company wants to use the Satesforce Platform to enable personalized l-l marketing, an online...

This answer is correct because a reference architecture is an example artifact that can be used to ensure the company understands the systems involved in the solution. A reference architecture provides a high-level overview of the components, integrations, and interactions of the solution, which can help the company visualize how the solution will work and what systems are required. References: https://architect.salesforce.com/diagrams/framework/reference-architecture