Explanation
The best tool for identifying the key recruitment steps and stakeholders in a visual format is to map the business process. Business process mapping is a technique that helps to create a visual representation of a business process. It shows the steps, inputs, outputs, roles, and decisions involved in the process. Business process mapping helps to understand the current state of the process, identify areas for improvement, and design the future state of the process. A BA should use business process mapping to identify the key recruitment steps and stakeholders for the Salesforce application. References:
https://trailhead.salesforce.com/en/content/learn/modules/business-analysis-process-mapping/understand-process

Explanation
Communicate Changes, Update Profiles and Communicate end of Changes are actions that belong to the Deploy phase of the four application lifecycle milestones. The Deploy phase involves moving changes from one environment to another and ensuring proper communication with stakeholders and end users. The Build phase involves creating solutions using declarative or programmatic tools based on requirements and design specifications. The Test phase involves verifying functionality, performance, security, and usability of solutions using various testing methods and tools. The Plan phase involves defining project scope, objectives, deliverables, resources, timeline, and risks. References:
https://trailhead.salesforce.com/content/learn/modules/application-lifecycle-and-development-models/understand

Explanation
The business analyst should seek sign-offs from the business for the functional requirements, individual test case functionality, and final go live date. The functional requirements are the statements that describe what the solution must do or provide to meet user needs or business objectives. The individual test case functionality is the verification that each test case meets the acceptance criteria for the corresponding user story or requirement. The final go live date is the date when the solution will be released to production and available for users or customers. These sign-offs help to ensure that the solution is complete, satisfactory, and ready for launch.