Answer:
A. threatening her competence
Explanation:
Competence refers to a person's ability to discharge his duties well because he is skilled at his job. A competent person discharges his duties well and is excellent at his job. When a person is consistently accused at work for not discharging his duties properly, the accuser is pointing fingers at his competence.
So, when a coworker questions Darias' ability to do her job, he is threatening her competence.
