As yelena approaches derek with a conflict, he jumps up from his chair and states that he is late for work. from this, you may assume that derek is using the conflict style.

withdrawing                          

Explanation:

Ralph Kilmann and Kenneth Thomas have developed five different types of conflict strategies including withdrawing or avoiding, collaborating, defeating, accommodation, and compromising.

Withdrawing conflict style: The term withdrawing conflict style is defined as the process that doesn't require any consideration or courage for the other person or party. An individual using withdrawing conflict styles behaves in a way that a certain incident has never happened or doesn't exist.

In the question above, Derek is using the withdrawing conflict style.

answer; (true);