During and prior to the 19th century, which were three major classes of Navy vessels?

The correct choice identifies three major classes of Navy vessels that were prominent during and prior to the 19th century: ships of the line, frigates, and sloops of war.

Ships of the line were large, heavily armed vessels that formed the backbone of naval fleets, designed to engage in battle lines during naval warfare. They were known for their powerful cannons and large crews, playing a crucial role in maritime dominance during this period.

Frigates were smaller than ships of the line but were faster and more maneuverable. They served multiple roles, including escorting convoys and engaging in reconnaissance missions. Their design allowed them to navigate efficiently in various maritime conditions, making them valuable in naval operations.

Sloops of war were even smaller vessels that typically carried fewer guns than frigates but were used for patrol duties, escorting merchant vessels, and protecting coastlines. Their versatility and shallow draft enabled them to operate in rivers and bays where larger ships could not venture.

The other choices listed represent classes of vessels that either emerged later, such as aircraft carriers and submarines, or do not encapsulate significant types used in naval conflicts of that historical period. The focus on ships of the line, frigates, and sloops of war is essential