which of the following is a key reason why international collaborations can be challenging?

A key reason why international collaborations can be challenging is that the collaborators may have different disciplinary and cultural backgrounds and practices. These differences can lead to challenges in communication, understanding, and work practices due to factors such as language barriers, cultural norms, time zone differences, and variations in academic or professional standards. Such diversity requires effective communication, mutual understanding, and careful planning to overcome potential misunderstandings and conflicts.