Which of the Following Is NOT a Good Guideline to Follow

Multiple Choice

Which of the following is NOT a good guideline to follow when writing to international audiences?

A) Write in the reader's language if you have any knowledge of the language at all; doing so greatly increases goodwill, even if you make mistakes.
B) Write using familiar terms (e.g."agree" instead of "concur") .
C) Avoid slang, contractions, and sports metaphors.
D) Make requests more indirect, unless you know that your reader understands North American behaviour.