Final answer:
The acceptable use policy that prohibits personal attacks is typically enforced in social media platforms, workplace email systems, educational institutions' networks, and online forums and discussion boards.
Step-by-step explanation:
The acceptable use policy that prohibits personal attacks is typically enforced in all of the above options - A) Social media platforms, B) Workplace email systems, C) Educational institutions' networks, and D) Online forums and discussion boards. For example, on social media platforms, personal attacks can take the form of online harassment or cyberbullying, where users engage in abusive speech or assault towards others. Similarly, workplace email systems, educational institutions' networks, and online forums also enforce such policies to maintain a respectful and professional environment. It's important for users to be aware of and abide by these policies to contribute to a positive and safe online community.