Explanation:Under the 1999 constitution, executive power is vested in a president who serves as both the head of state and the chief executive, is directly elected to a four-year term, and nominates the vice president and members of the cabinet. The constitution provides for a bicameral National Assembly, which consists of the House of Representatives and the Senate. Each state elects 10 members to the House of Representatives for four-year terms; members of the Senate—three from each state and one from the Federal Capital Territory—also are elected to four-year terms.