What must officers check for during a search incident to arrest?

During a search incident to arrest, officers are primarily focused on ensuring their safety and the safety of others, which is why checking for weapons and contraband is critical. This type of search is intended to secure the officer's immediate environment in relation to the suspect being arrested. By looking for weapons, officers can prevent potential harm that could arise from a suspect being armed. Similarly, searching for contraband—items that are illegal and could be used as evidence in a crime—is essential in maintaining the integrity of the investigation, ensuring that no further unlawful actions occur following the arrest.

The other choices do not encapsulate the primary concerns of officer safety and the immediate objectives of such a search. For instance, while identification documents and money may have relevance in a broader investigation, they do not address the immediate safety aspects that a search incident to an arrest prioritizes.