The analysis that a BA should perform is strategy analysis. Strategy analysis is a technique that helps to understand the business context and environment of an organization, its vision and goals, its strengths and weaknesses, its opportunities and threats, its capabilities and resources, and its stakeholders and competitors.
Strategy analysis helps to identify the business problems or needs that need to be addressed, evaluate potential solutions or options that can address them, and align them with the business strategy and objectives. In this case, CK faces challenges with accurate reporting and metrics to use when scheduling service agent shifts. A BA should perform strategy analysis to understand CK's business context and environment, identify the root causes of the challenges, evaluate potential solutions or options that can solve them in Salesforce, and align them with CK's business strategy and objectives. References:
https://trailhead.salesforce.com/en/content/learn/modules/business-analysis-strategy-analysis/understand-strategy

Explanation
This answer states that violating the definition of done is the principle of Agile methodology that this situation violates for completing UAT of a solution at Universal Containers. Agile methodology is an approach to software development that emphasizes delivering value to customers in short iterations or sprints, and responding to changing requirements with flexibility and collaboration. Definition of done is a criterion or a checklist that specifies when a user story or a task is considered complete and ready for deployment or delivery. Violating the definition of done means that the BA accepts a user story or a task as done without ensuring that it meets all the quality standards or acceptance criteria agreed upon by the project team.
References:https://trailhead.salesforce.com/en/content/learn/modules/agile-basics/agile-basics-done

The path that the business analyst should take to find information about custom apps, active Salesforce Sites, active flows, custom tabs, and Visualforce pages is to review configuration settings. Configuration settings are options or preferences that can be customized or modified in Setup. They can help the business analyst understand how Salesforce was implemented and what features or components were enabled or disabled.
Custom apps, active Salesforce Sites, active flows, custom tabs, and Visualforce pages are examples of configuration settings that can be accessed or changed in Setup.Conducting stakeholder interviews may be a useful way to gather information about business needs, expectations, or feedback, but not about technical details or configuration settings. Reading business process documentation may be a useful way to understand how a business process works or flows, but not about technical details or configuration settings. References:
https://trailhead.salesforce.com/content/learn/modules/salesforce-business-analyst-certification-prep/customer-di
https://trailhead.salesforce.com/content/learn/modules/salesforce-business-analyst-certification-prep/business-pro