Explanation:
Building an Apex framework to deploy CPQ records and using an open source SFDX plugin and version control are two best practice recommendations an architect should propose to allow UC to deploy CPQ features as part of their CI/CD process. Building an Apex framework to deploy CPQ records is a good practice, as it allows the architect to automate the deployment of the configuration SObjects that drive the business logic of CPQ, and to avoid manual steps or errors. Using an open source SFDX plugin and version control is another good practice, as it allows the architect to leverage the benefits of the Salesforce DX development model, such as source-driven development, modular packaging, and team collaboration. Using a third-party product or data loader to deploy CSV files are not best practices, as they can introduce additional costs, dependencies, or risks to the deployment process.