Final answer:
All options presented except 'None of the choices are correct' are valid questions that should be answered by businesses before making major IT investments, covering key business issues, risks, and success metrics.
Step-by-step explanation:
When making major IT investments, businesses are expected to answer a set of critical questions that help in assessing the potential value and impact of the investment. Among the choices provided, 'None of the choices are correct' is the option that does not represent a question businesses should answer before making major IT investments, because all the other provided options are legitimate and important questions that need to be addressed.
Determining the key business issues the IT project addresses, understanding the risks involved in undertaking the project, and establishing metrics for measuring success are all essential parts of due diligence for IT investments.