A campaign has been setup with an operator group (with 2 operators) as approvers in the "Approvals" section of the delivery. What will happen if one of the operators is unavailable to provide approval?

In Adobe Campaign Classic, when an operator group is assigned as an approver for a delivery, the default configuration requires approval from all members of that group. The approval process is also governed by an expiry deadline. If one of the two designated operators is unavailable, it becomes impossible to gather the required approvals from both. The process will wait until the specified approval deadline is reached. At that point, because the condition for approval has not been met, the delivery will be automatically rejected, and the campaign process will not proceed.

A. The input of just the first approver is required in order for the process to continue onto the next activity This is incorrect because the default behavior requires all designated operators to approve, not just one. This can be configured, but it is not the default.
C. The process will continue without approval if one has been provided before expiry This is incorrect for the same reason as option A. One approval is insufficient when the default setting requires all members of the group to approve.
D. The process waits indefinitely for inputs from both approvers before moving to the next activity This is incorrect because all approval tasks in Adobe Campaign have a configurable expiry deadline. The process does not wait indefinitely.

1. Adobe Campaign Classic v7 Documentation - Configuring approvals:

Reference: In the "Approvals" tab of the delivery properties, when multiple operators or a group are selected, the default behavior is specified.

Quote/Section: "By default, all designated operators must approve the delivery for it to be sent. You can, however, select the Number of approvals required option to specify the number of operators required to start the delivery process."

Source: Adobe Experience League, Campaign Classic v7 Documentation, Processes and data management > Approval processes > Configuring approvals.

2. Adobe Campaign Classic v7 Documentation - About delivery approvals:

Reference: This document outlines the functionality of the approval cycle, including the role of the expiry deadline.

Quote/Section: "You can set a deadline for delivery approval in the Approval deadline field. If the delivery is not approved by this deadline, it is automatically rejected."

Source: Adobe Experience League, Campaign Classic v7 Documentation, Campaign Management > Deliveries > About delivery approvals.