Which of the following is NOT a quality of good team players?

Selfishness is not a quality of good team players because it undermines the teamwork principle of collaboration and mutual support. Effective teamwork relies on individuals contributing to the group's goals, sharing responsibilities, and looking out for one another's success. Unlike qualities such as self-discipline, enthusiasm, and loyalty, which promote a positive, cooperative atmosphere, selfishness can lead to conflicts, distractions, and a breakdown in communication. In a team environment, members should focus on collective achievements rather than personal gain, making selfishness counterproductive to the essence of teamwork.