Answer: B) Summary
A summary is a brief restatement of the main points of a particular topic. Summaries are used when it is inefficient, irrelevant, or overly complicated to explain every detail of a situation. Therefore, a summary presents the main points while avoiding unnecessary details. In this case, if Tristram is providing a summary on how he became involved with Sir Marhaus, it means that he is retelling the most important events that led him to this involvement.