Which two ranger elements fought in the Revolutionary War?

The correct answer highlights the significant involvement of the Corps of Rangers and Marion's Partisans during the Revolutionary War. The Corps of Rangers, under figures like Benedict Arnold, were involved in critical operations throughout the conflict, specializing in unconventional tactics and skirmishes that turned the tide in several engagements. Marion’s Partisans, led by Francis Marion, also known as the "Swamp Fox," utilized guerrilla warfare tactics in South Carolina, effectively disrupting British supply lines and communications.

Together, these two groups represented a blending of organized military efforts and irregular, local resistance, showcasing the diversity of fighting techniques employed during the Revolutionary War. This cooperation between different ranger elements exemplified the strategic importance of mobility, surprise attacks, and knowledge of the local terrain in the overall American effort for independence. The other combinations do not accurately reflect historical partnerships or recognized fighting units during the Revolutionary War.