What is the primary responsibility of customs authorities in intermediate countries regarding cargo?

The correct answer pertains to the role of customs authorities in intermediate countries, specifically acknowledging that they typically do not engage with cargo that is merely transiting through their jurisdictions without an entry into their local economy. Customs authorities in these intermediate countries are primarily concerned with shipments that are officially processed or off-loaded within their ports or territory. If a cargo is simply passing through and remains on board without being formally entered or cleared by customs, the authorities generally do not assert control or oversight over it. Therefore, their lack of interest in cargo not off-loaded reflects their function of focusing on shipments that require regulatory oversight and tariff application due to the local economic involvement.

Understanding this framework clarifies that customs authorities prioritize enforcement and oversight of goods that engage with their national regulations and requirements, a function not fulfilled for cargo that remains solely in transit.