Concept:A bicameral legislature has two chambers, which increases representation and participation.Explanation:More chambers mean more elected representatives from different groups and regions.This allows more citizens to take part in law-making indirectly.It also ensures broader viewpoints are heard before laws are passed.Thus, it widens the scope of political participation.The other options do not describe a democratic role of a bicameral legislature.Answer:D. widening the scope of political participation