Which of the following allows for collaborative planning among departments in SAP Analytics Cloud?

Collaborative enterprise planning is the correct answer because it specifically refers to features within SAP Analytics Cloud that facilitate teamwork and coordination between different departments during the planning process. This functionality is designed to enhance collaboration by allowing users from various departments to input their data, share insights, and collectively develop forecasts and plans. The process supports a unified approach to planning, ensuring that all relevant stakeholders can contribute and access a single source of truth.

In contrast, while data locking, input controls, and version management have their respective roles in managing data integrity and controlling user input, they don't inherently promote collaboration among departments. Data locking primarily focuses on safeguarding data against changes during specific planning periods, input controls regulate the types of inputs users can make, and version management deals with maintaining and referencing different iterations of data. Thus, these features support the planning process but do not facilitate the interactive, collaborative experience that is central to collaborative enterprise planning.