正解:A
A business collaboration tool is a software that enables teams to communicate, share, and create together online. A business collaboration tool can help project teams across multiple time zones to overcome the challenges of distance, time differences, and cultural diversity. A business collaboration tool can provide features such as instant messaging, video conferencing, file sharing, document editing, project management, and more. A business collaboration tool can also integrate with other applications and platforms that the project team uses. A business collaboration tool can improve the efficiency, productivity, and quality of the project team's work12. References = CompTIA Project+ Study Guide: Exam PK0-005, 3rd Edition, Chapter
4: Project Communications, p. 137; The 15 best collaboration tools for productive teams - Workable; 17 Best Business Collaboration Tools for Teams - Venngage