Final answer:
The upper house's role in maintaining power balance includes providing a platform for minor parties, ensuring they participate in the legislative process, and acting as a check on the majority party's power.
Step-by-step explanation:
The role of the upper house in maintaining the balance of power held by independents/minor parties is multifaceted. Firstly, it serves as a platform where independents and minor parties can vocalize their opinions and concerns, potentially influencing legislation and policy debates. Secondly, it ensures that these groups are included in the legislative process, although not necessarily providing equal representation, they are granted the opportunity to present their ideas. Most importantly, the upper house acts as a crucial check on the power of the majority party, preventing any one party from having unfettered control over the legislative agenda. This function is vital for a healthy democracy, as it creates an environment that requires consensus and promotes the consideration of diverse viewpoints.