Concept:Liberia’s 19th-century missionary work was mainly led by a single Protestant denomination.
Explanation:Freed American settlers and missionaries brought various Christian groups to Liberia.
Among these groups, the Methodist denomination was the most active and influential.
Methodist missionaries established churches, schools, and mission stations across Liberia.
Their work attracted many converts and made Methodism the leading missionary force in the region.
Other denominations such as Baptists, Anglicans, and Presbyterians were present but had less overall dominance.
Answer:D. Methodist