Final answer:
Option (3), The Great Compromise was amended to create a bicameral legislature, with equal representation in the Senate to ensure fairness to smaller states and representation based on population in the House to accommodate larger states.
Step-by-step explanation:
The Great Compromise was amended to include a bicameral legislature to settle the debate between the large and small states regarding representation in Congress. The plan, proposed by Roger Sherman, balanced interests by allowing each state to have two senators, providing equal representation in the Senate as suggested by the New Jersey Plan, while representation in the House of Representatives would be based on states' population, resembling the Virginia Plan. Senators were to be appointed by state legislatures, and members of the House would be popularly elected by state voters.
Thus, the correct answer to the student's question is that this plan was amended as part of the Great Compromise because using equal state representation in the Senate would be more fair (Option 3). This compromise addressed concerns from smaller states that felt overpowered by larger states in the initial proposals, while still respecting the larger states' desire for population-based representation in the legislative branch.