The business analyst should define roles, responsibilities, and processes to help prioritize feature requests from various business units. This will help to establish clear expectations, communication channels, and decision-making criteria for the project. The business analyst should not give priority to the earliest requested dates, as this may not reflect the business value, urgency, or feasibility of the feature requests. The business analyst should also not find and install a backlog grooming app from AppExchange, as this may not address the root cause of the prioritization problem, and may introduce additional complexity and cost to the project. References: Collaboration with Stakeholders, Get Started with Salesforce Business Analyst Certification Prep, Cert Prep: Salesforce Business Analyst

Explanation
This answer identifies a journey map as the document that the BA should create to visually illustrate the customer case lifecycle for UC. A journey map is a tool that shows how customers interact with a business across different touchpoints, channels, and stages. A journey map helps to understand and improve the customer experience, identify pain points and opportunities, and align business goals with customer needs.
References:https://trailhead.salesforce.com/en/content/learn/modules/customer-journey-basics/create-a-customer

Report Builder is the tool used to create reports, incorporate filters and select the Report Type. Data Loader is a tool used to import and export data in Salesforce. A csv file is a file format that can be used to import or export data in Salesforce, but it is not a tool to create reports. Report Composer is not a valid tool in Salesforce. References: https://help.salesforce.com/s/articleView?id=sf.reports_builder_overview.htm&type=5

Explanation
The three development models that Salesforce supports as part of Application Lifecycle Management (ALM) process are Change Set Development, Org Development, and Package Development. Change Set Development is a model that uses change sets to deploy metadata changes from one org to another org. Org Development is a model that uses scratch orgs to create and test metadata changes in isolated environments before deploying them to other orgs. Package Development is a model that uses unlocked packages to bundle and distribute metadata changes across orgs as modular applications. Rapid Application Development, Flow Builder, and Salesforce DX are not development models supported by Salesforce as part of ALM process.
References:
https://trailhead.salesforce.com/content/learn/modules/salesforce-business-analyst-certification-prep/user-accepta
https://trailhead.salesforce.com/en/content/learn/modules/application-lifecycle-and-development-models