Explanation:

- Single Transferable Vote: A voting system used for proportional representation through ranked voting in multi-seat organizations or constituencies.

- Proportional Representation: An electoral system in which parties gain seats in proportion to the number of votes cast for them.

- Limited Suffrage: A situation where only certain groups of people are allowed to vote, based on criteria like gender, race, or education.

- Adult Franchise: The right of all adult citizens to vote, regardless of their race, gender, or social status. This is also known as universal suffrage.

The elections to the House of the People and the Legislative Assemblies of States in India are conducted based on Adult Franchise.

Correct Answer: Option 4 - Adult Franchise