What is required to drill down into a card account's transaction management?

To effectively drill down into a card account's transaction management, access to the card account list is essential. This list allows users to view the various accounts available, which is a prerequisite for examining specific transactions within those accounts. Without access to this list, a user would not have a starting point to identify the account they wish to explore further.

The other options, while they may also pertain to different aspects of card account management, do not directly address the primary requirement for initiating the process of drilling down into transactions. Therefore, having access to the card account list is the correct approach to enable a thorough examination of individual transactions within the relevant accounts.