The elective principle was first introduced in Nigeria by the

Analyze the question: It asks which constitution first introduced the elective principle in Nigeria, meaning the first time Nigerians could vote to choose some members of the legislature.

Explain the concept: The elective principle means that some members of the legislative council are chosen by popular vote rather than appointed by the Governor. Before 1922, all African members of the Legislative Council were nominated.

Step-by-step solution:

1. Richards Constitution (1946): It created regional Houses of Assembly and gave Nigerians more say, but members were mostly nominated or selected indirectly. It did not introduce elections.
2. Clifford Constitution (1922): This is the first constitution to introduce direct elections in Nigeria. Four elected African seats were created: three for Lagos and one for Calabar. Voting was limited to adult males with an annual income of at least £100 in those two cities.
3. Macpherson Constitution (1951): It introduced indirect elections on a wider scale, through a multi-tier electoral college system. This was an extension of the elective principle, not its start.
4. Lyttleton Constitution (1954): It introduced a federal system and direct elections in the regions, but again this came after 1922.

Because the Clifford Constitution of 1922 was the first, the answer is A.

Tip: Remember the order of the constitutions with "C-R-M-L": Clifford (1922), Richards (1946), Macpherson (1951), Lyttleton (1954). Whenever you see "first elective principle," think Clifford, 1922, Lagos and Calabar.