Which of the following is a collaborative, cloud-based project management tool?

The correct answer is a collaborative, cloud-based project management tool. Google Docs serves as a platform that allows multiple users to create, edit, and comment on documents in real-time from various locations. This enhances collaboration among team members who can work together on projects easily, share feedback, and keep everyone on the same page, regardless of their physical location.

While Basecamp is indeed a project management tool that facilitates collaboration, it is not as universally recognized as a specific standalone tool compared to Google Docs, which is widely used for collaborative document editing. MS Project, on the other hand, is primarily a desktop application designed for project scheduling and management, lacking the same level of cloud-based collaboration as Google Docs. Similarly, MS Office includes a suite of applications that are mainly for individual productivity rather than collaboration, especially if they are not being used in conjunction with their cloud-based versions.