The most appropriate approach to follow in writing a message presenting the facts about an indirect claim is to:

A) show your anger as you present the facts.
B) state directly that the reader's company was at fault.
C) clearly and objectively present the facts.
D) skillfully avoid stating the negative facts.
E) demand compensation because the facts are already known to the reader.

When presenting the facts about an indirect claim, it is important to maintain a professional and objective tone. This means avoiding personal attacks or emotional language (choice A) and directly assigning blame or fault to the reader's company (choice B). It is also important to clearly and concisely present the facts without any bias or attempt to avoid negative information (choice D). Finally, demanding compensation without providing a thorough explanation of the facts could come across as aggressive and unprofessional (choice E). Therefore, the most appropriate approach is to choose choice C, which emphasizes the importance of presenting the facts in a clear and objective manner.