In assessing the security risk of the minimum viable product (MVP) for a financial organization's new application, the most important activity for the security analyst to assess is option D: The software has been code reviewed.
Code review is a crucial security practice that helps identify and address security vulnerabilities and weaknesses in the software's code. By conducting a thorough code review, the security analyst can identify potential security flaws, coding errors, and vulnerabilities that could be exploited by attackers. This allows for the identification and mitigation of security risks before the software is released to customers, helping to ensure a higher level of security in the application.