Which of the following types of ships is essential for resupplying other vessels at sea?

The selection of combat logistics ships as the correct answer highlights their critical role in naval operations. These vessels are specifically designed to provide supply and logistics support to other ships while they are at sea. This can include delivering essential supplies such as fuel, ammunition, provisions, and other necessary equipment. By enabling vessels to remain operational without needing to return to port for resupply, combat logistics ships extend the endurance and operational reach of naval fleets.

In contrast, surface combatants focus on engaging adversaries and protecting naval assets, amphibious warfare ships specialize in supporting land assaults from sea to shore, and intelligence ships are intended for gathering and analyzing information rather than logistical support. Thus, combat logistics ships are indispensable for maintaining ongoing naval operations and ensuring that fleets remain mission-ready during extended deployments.