Answer:
D. The work of Tribeless Alliance in Kenya.
Explanation:
There were periods of active protests and even violence before Kenyan independence in 1963. Jomo Kenyatta became the first post-independence Kenyan PM and was a key figure in winning it. After WWII, the British administration gave some legislative seats to Africans. But the activities of the Tribeless Alliance are not a factor leading to independence in 1963.
