Final answer:
Coordinating relief efforts after a natural disaster is an example of the ethical use of computers and social media, as it represents the use of technology for social good and constructive purposes.
Step-by-step explanation:
In the context of the ethical use of computers and social media, the scenario demonstrating this is b) Coordinating relief efforts after a natural disaster. This use of social media and technology embodies constructive and beneficial behavior, leveraging the platforms for social good. As evidenced by the case of Haiti's earthquake disaster relief in 2010, social media can play a crucial role in organizing and directing aid by analyzing incoming data and prioritizing the calls for help. Contrastingly, actions such as sharing misinformation, hacking for personal gain, and spreading false rumors are unethical and can have devastating consequences, exacerbating crises and undermining public trust.