What was Oliver Tambo's role in the African National Congress (ANC)?

Oliver Tambo played a significant role in the African National Congress (ANC) as a prominent leader and strategist, particularly during the anti-apartheid struggle. His involvement with the ANC began in the early phases as he was a founding member of the ANC Youth League, which he joined in the late 1940s. The Youth League was essential in reshaping the ANC into a more radical and action-oriented organization, emphasizing mass mobilization against apartheid.

While the option identifying him solely as a Youth League member does highlight a crucial part of his early influence, it doesn't capture the full scope of his contributions. Tambo's leadership qualities later positioned him in vital roles where he became the President of the ANC during exile, shaping the organization and its strategies while rallying international support against apartheid. His extensive involvement encompassed diplomatic efforts and mobilizing resources for the liberation struggle, further illustrating his importance beyond just being a member of the Youth League.

The other choices indicate roles that did not encompass the full breadth of Tambo's contributions to the ANC. Thus, while he was indeed involved with the Youth League, his legacy far exceeds that initial role, marking him as a key figure in the ANC's broader history.