Answer:
A. An oversized ego
Step-by-step explanation:
An oversized ego causes an individual to be self-reliant, proud and always right in his/her decisions or judgment. This is a terrible character to possess as a manager because good managerial decisions are made from observations from the lower-level workers who participate in these duties daily.
Tyrone, who was recently promoted and usually take advice from his peers is no longer interested in getting any input from them or his boss. He has determined to run the project as he deems fit. Tyrone is exhibiting an oversized ego.