Which of the following is not the responsibility of the Electoral Commission in Nigeria?

The responsibility that is not assigned to the Electoral Commission in Nigeria is the swearing-in of members of the House of Assembly. The Electoral Commission in Nigeria is responsible for ensuring that elections are free, fair, and credible. Their responsibilities include the compilation of the electoral register, delimitation of constituencies, supervision of polling, and counting of votes. They are also responsible for the announcement and publication of election results. However, the swearing-in of members of the House of Assembly is not within the purview of the Electoral Commission. This responsibility is usually carried out by the Clerk of the House of Assembly, who administers the oath of office to the newly elected members before they take up their positions.