Final answer:
Lexi is using a strategy of empathizing with the commenter by remembering their humanity, which helps avoid escalation of conflict on social media.
Step-by-step explanation:
The strategy Lexi is using to avoid conflict on social media is Remembering the other user's humanity. By pausing to think about the reasons behind a commenter's angry and hurtful message, she is making an effort to understand their perspective and emotional state. This empathetic approach can prevent conflicts from escalating and foster a more respectful online dialogue.