What item does the first officer take with them during an evacuation?

During an evacuation, the first officer takes the LID (Load Information Document) and NOTOC (Notice to Captain) with them. These documents are crucial as they contain essential information about the passengers and cargo onboard, which is vital for ensuring everyone is accounted for and for maintaining situational awareness in emergencies.

The LID provides details about the load, including the distribution of passengers and any dangerous goods that may be present, which is important for safety management during and after the evacuation. The NOTOC outlines any hazardous cargo and other critical flight information that needs to be communicated or considered, especially when handling emergencies.

In contrast, while other options like the passenger list, flight manual, or emergency beacon have their own importance in flight operations or safety protocols, they do not play a direct role in the immediate actions required during an evacuation. The passenger list is useful for accounting purposes after the evacuation, but the first officer's primary focus during the evacuation is on critical safety information captured in the LID and NOTOC.