Final answer:
The Central African Federation comprised Northern Rhodesia, now Zambia, and Nyasaland, now Malawi. The correct answer to the question is both Northern Rhodesia and Nyasaland.
Step-by-step explanation:
The countries included in the Central African Federation were Northern Rhodesia, Nyasaland, and Southern Rhodesia. Therefore, out of the given options, the correct answer is (3) Both Northern Rhodesia and Nyasaland. These territories united in 1953 to form the federation, which was an initiative by the British government meant to combine and manage these colonies more efficiently.
Northern Rhodesia is now known as Zambia, which gained independence in 1964 and changed its name from Northern Rhodesia to Zambia. Nyasaland became independent in 1964 as well and is now known as Malawi. Southern Rhodesia refers to the current country of Zimbabwe, which was also a part of the federation but is not mentioned in the options provided.