Concept: The major defect in most pre-independence constitutions in British West Africa was the excessive power given to the colonial Governor.
Explanation: Before independence, the constitutions used in British West Africa were designed to serve colonial interests.
African representatives were allowed into the legislative council, but real power still belonged to the Governor.
The Governor had veto power, meaning he could reject laws passed by the legislature.
He was appointed by the British Crown and was not accountable to the people of West Africa.
This made the decisions of African representatives ineffective and undermined the principle of democracy.
The legislative council could not act independently because any bill could be overturned by the Governor.
Hence, the veto power of the Governor was seen as a major defect because it left ultimate political control in the hands of the British colonial authorities.
Answer: A. veto power of the Governor