Answer:
D) were highly likely to be in their lower-achieving group.
Explanation:
Theory X refers to a motivation theory developed by Douglas McGregor. Theory X can be described as a pessimistic view of humanity and human workers. Managers who support theory X tend to dislike their own work and believe everyone else dislikes their work, are not ambitious and believe everyone else is not ambitious either, and finally don't like to assume responsibility over their actions and believe everyone else is like them.
So it shouldn't be a surprise that managers who support theory X are underachievers.