The tool that Universal Containers should use to prevent teams from overwriting each other's changes in the future is a version control system. A version control system is a tool that tracks and manages changes to code or configuration in a software project or enhancement. A version control system helps to prevent teams from overwriting each other's changes by allowing them to create and work on separate branches or copies of the code or configuration, merge their changes with the main branch or copy when they are ready, and resolve any conflicts or errors that may occur during the merge. A version control system also helps to maintain a history of changes, backup and restore previous versions, and collaborate and communicate with other team members. References: https://trailhead.salesforce.com/content/learn/modules/git-and-git-hub-basics/work- with-the-git-hub-workflow

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
To successfully meet governance requirements to identify the business purpose, the business analyst should adhere to agreed upon mapping standards. Mapping standards are guidelines or conventions that define how to create and document business process maps. They help to ensure consistency, clarity, and quality of the process maps across different projects and teams. They also help to align the process maps with the business objectives and requirements, and support regulatory considerations.
References:https://trailhead.salesforce.com/content/learn/modules/salesforce-business-analyst-certification-prep/

Explanation
This answer states that documenting user requirements from each department during discovery sessions is what the BA should do to get buy-in from users for preparing for a new Sales Cloud implementation for 6,000 users at CK. User requirements are the needs, expectations, and objectives of the users for the Sales Cloud implementation. Discovery sessions are meetings or workshops where the BA gathers and clarifies user requirements from different stakeholders. Documenting user requirements from each department during discovery sessions means that the BA records and organizes the information obtained from different stakeholders from different departments, such as manufacturing and delivery, in a clear and concise way.
Documenting user requirements from each department during discovery sessions is what the BA should do to get buy-in from users for preparing for a new Sales Cloud implementation because it helps the BA to understand and validate the user requirements, and to communicate and align them with the project scope and goals.
References:https://trailhead.salesforce.com/en/content/learn/modules/salesforce-business-analyst-quick-look/use