Final answer:
The common pitfalls of a writer's workshop include individuals being offensive, domination of discussion by either one person or the workshop leader, rather than one person being silent, as this does not typically disrupt the group.
Step-by-step explanation:
The common pitfalls of a writer's workshop include Being personally offensive or insulting, One person dominating the conversation, and The workshop leader dominating discussion. These factors can negatively impact the collaborative and educational nature of a workshop. On the contrary, One person being completely silent is not typically viewed as a pitfall, since individual participation levels can vary and silence does not disrupt the group dynamic in the same way as the other issues listed.