Final answer:
Glen should report the email offering exam answers to (ISC)² for investigation to maintain the integrity of the certification and adhere to the professional code of ethics.
Step-by-step explanation:
If Glen is an (ISC)² member and receives an email offering a set of answers for an (ISC)² certification exam, the most ethical and proper action for Glen to take would be option B) Report the email to (ISC)² for investigation. Purchasing the answers would violate the (ISC)² Code of Ethics, and sharing the email with colleagues could inadvertently spread the misconduct. Ignoring the email takes no action against the potential fraud or breach of ethics.