Final answer:
The best example of an attorney work product from the provided options is 'Motions prepared to defend an organization against charges,' as these are prepared specifically for litigation and represent the core of legal work product.
Step-by-step explanation:
The question asks which of the provided options best demonstrates an attorney work product. An attorney work product is a legal concept that refers to materials prepared by or for an attorney in preparation for litigation. Thus, such materials are often protected from being disclosed to the other parties in a legal case. The most appropriate option among those provided in the question that fits this description is 'd) Motions prepared to defend an organization against charges'. These are documents drafted by or at the direction of an attorney in anticipation of litigation and are quite representative of the work products that attorneys create.
Other options, like notes from interviews, internal memos, or conversations between attorney and client, could potentially also be considered work products, but motions prepared explicitly for defense in legal proceedings are the quintessential example of attorney work product. Conversations between attorney and client could indicate attorney-client privilege rather than work product doctrine.