Final answer:
Kaitlyn is exhibiting an aggressive communication style, as she is confrontational, uses a harsh tone, and often has argumentative interactions with others.
Step-by-step explanation:
Based on the scenario where Kaitlyn is described as socially confrontational, using a harsh tone, and often engaging in disagreeable and argumentative social interactions, it's clear that Kaitlyn is employing an aggressive communication style. This style is characterized by a tendency to express oneself in a forceful and hostile manner, which can lead to antagonistic relationships and environments. In contrast, assertive communication involves expressing one's thoughts and feelings confidently without being aggressive, passive communication involves avoiding confrontation and not expressing one's needs, and passive-aggressive communication involves expressing negative feelings indirectly rather than openly discussing them.