Final answer:
Someone who gets pleasure out of hurting people online and starting conflicts is a B. troll.
Step-by-step explanation:
A troll, in the context of online behavior, refers to an individual who intentionally provokes and harasses others on the internet. Trolls seek to create discord, elicit emotional responses, and disrupt online communities for their own amusement. Their actions can range from posting inflammatory comments to engaging in cyberbullying. The term "trolling" is widely recognized in digital communication and is associated with negative behavior that undermines positive and constructive online interactions.
In contrast, a bystander is an individual who observes but does not actively participate in a situation, while an advocate promotes a cause or idea in a supportive manner. A positive digital citizen refers to someone who engages in responsible and respectful online behavior, contributing to a constructive and inclusive digital environment.
Therefore, the most fitting term for someone who derives pleasure from causing harm online and instigating conflicts is troll. Identifying and addressing trolling behavior is crucial for maintaining healthy online communities and fostering positive digital citizenship.