What field is used on notification records to determine when to send a notification if multiple notification records are triggered?

The correct choice is weight. This field is used to determine the order of notifications when multiple notification records are triggered simultaneously. Each notification can be assigned a numeric value in the weight field, which helps the system prioritize the notifications being sent. A higher weight means that the notification will take precedence and be sent out first, thus ensuring that the most important messages are delivered in the desired sequence.

The priority and severity fields, while related to how notifications are assessed or classified, do not specifically dictate the order in which multiple notifications will be sent. The trigger time influences when a notification is activated, but it does not manage the prioritization of overlapping notifications. Therefore, weight is crucial for managing the delivery sequence of simultaneous notifications.