What was the main purpose of Sloops of War?

Sloops of War were primarily designed to be smaller warships that typically carried 10 to 20 guns, making them effective for various naval operations while remaining more maneuverable and easier to crew than larger ships of the line. This capability allowed them to engage in combat while also serving as escort or patrol vessels, particularly in coastal and shallow waters where larger vessels might be at a disadvantage. Their size and armament made them versatile assets in naval warfare, suited for missions ranging from blockading enemy ports to providing support for land forces. The focus on their role as compact warships with adequate firepower is what solidifies option C as the main purpose of Sloops of War.