Roslyn's approach to her problem with her coworker is an example of

An evolutionary strategy refers to behavioral adaptations that have developed over time to enhance survival and reproduction. This concept is not directly applicable to Roslyn's situation, as her actions are not about long-term evolutionary benefits but rather about addressing a specific interpersonal conflict in the workplace.

Emotion-focused coping entails managing the emotional distress resulting from a problem rather than tackling the problem itself. While this strategy can be useful in situations where the problem cannot be changed, it does not describe Roslyn's approach, which focuses on resolving the conflict with her coworker rather than just managing her feelings about it.

A need for achievement refers to an individual's drive to accomplish goals and attain success. While Roslyn may have personal goals related to her work, this term does not encapsulate her method of dealing with her coworker, as it focuses more on her motivation rather than her coping strategy in a challenging interpersonal situation.