Which of the following can negatively affect workplace atmosphere?

An impolite demeanor can significantly undermine the workplace atmosphere. Such behavior often creates a hostile or uncomfortable environment for colleagues, fostering negativity, conflict, and overall dissatisfaction. In contrast, positive feedback, effective collaboration, and constructive criticism are all components that enhance a workplace atmosphere. Positive feedback encourages and motivates staff, effective collaboration promotes teamwork and communication, and constructive criticism helps individuals grow and improve their skills. Thus, an impolite demeanor stands out as a factor that detracts from a healthy and productive workplace culture.