The concept of "liberty" means that

The concept of "liberty" generally encompasses the idea that individuals should have the freedom to make choices and express themselves without undue interference or oppression. This can include the following interpretations related to the options you've provided:

1. **People should have representation in the legislature that passes laws on them**: This aligns well with the modern understanding of liberty, emphasizing the importance of democratic governance and the right to participate in the political process.

2. **People should only be able to vote if they own property**: This view reflects a more restrictive historical interpretation of liberty that was prevalent in some contexts, particularly during the early development of liberal democracies. However, modern concepts of liberty advocate for universal suffrage, where all citizens have the right to vote, regardless of property ownership.

3. **People of one country should not be ruled by the government of another country**: This notion aligns with the principle of self-determination and national sovereignty, which are important components of liberty, advocating for the right of a group or nation to govern itself without external control.

In summary, while all three statements touch on aspects of liberty, the first and third options are more closely aligned with contemporary understandings of the concept, emphasizing representation and self-governance.