Explanation:
When a new regulation for safeguarding information processed by a specific type of transaction is being identified by the IT manager, then the immediate step would be to understand the impact and requirements of this new regulation. This includes assessing how the enterprise will comply with the regulation and to what extent the existing control structure supports the compliance process. After that manager should then assess any existing gaps.
Incorrect Answers: B, C, D: These choices are appropriate as well as important, but are subsequent steps after understanding and gap assessment.