Blech. I get your point.
After starting with the basic definitions I would go to:
- Rep govt is about giving our MPs and government power, whereas resp govt is about holding them accountable for the way in which they use that power.
Then, the example of elections can be used to show the difference:
- Elections are important to both principles, and can be used to demonstrate how they are different. In rep govt, elections are the means by which MPs and (indirectly) government gain the power and authority to govern the country and rule the people. By voting in elections, people give power to their chosen representatives. In resp govt, however, elections function as a tool to ensure accountability. The executive government is held indirectly accountable by the people because, if the people are unhappy with the way in which the government has used its power, they can change their vote at the next election to hold the government accountable.
VCAA hasn't before asked a 'compare and contrast' question with these two - but anything is possible and, as you say, distinguishing between the two requires a more explicit comparison than just giving contrasting definitions.