This scenario requires three distinct user experiences on the Opportunity object. To achieve this, the administrator must use a combination of sales processes, record types, and page layouts.

1. Sales Processes: These control the Stage picklist values available for an Opportunity. Since each of the three teams needs different stages, three separate sales processes are required.

2. Page Layouts: These control the fields, sections, and related lists visible on a record page. As each team needs different fields, three distinct page layouts are necessary.

3. Record Types: These bring everything together by allowing the administrator to assign a specific sales process and page layout to different user profiles, thereby creating a unique experience for each team.

A. This is incorrect because a single page layout cannot accommodate the requirement for different fields for each of the three teams.

B. This is incorrect because a single sales process cannot provide the different sets of stages required by the three distinct teams.

D. This is incorrect because one sales process and one record type are insufficient to manage different stages and field layouts for three separate teams.

1. Salesforce Help, "Set Up and Manage Sales Processes": "Create multiple sales processes to display different picklist values for the Stage field based on the record type." This document confirms that different stages require different sales processes, which are then linked via record types.

2. Salesforce Help, "Create Record Types": "Record types let you offer different business processes, picklist values, and page layouts to different users... For example, you can create a record type for your sales team that uses a sales process with stages appropriate for your sales cycle." This directly supports using record types to link processes and layouts to users.

3. Salesforce Trailhead, "Data Modeling" Module, "Customize Picklists and Business Processes with Record Types" Unit: "Record types determine the business processes, page layouts, and picklist values users have access to... For opportunities, you can create different sales processes that control the stages an opportunity follows through its sales cycle." This reinforces the relationship between sales processes (for stages), page layouts (for fields), and record types (to assign them).