Explanation:

- Karnataka has a bicameral legislature. It has two houses: the Legislative Assembly (Vidhan Sabha) and the Legislative Council (Vidhan Parishad).

- Gujarat has a unicameral legislature, meaning it has only one house, the Legislative Assembly (Vidhan Sabha).

- Andhra Pradesh used to have a bicameral system, but its Legislative Council has been abolished and revived multiple times. Currently, as of 2024, it has a Legislative Council, so it is bicameral.

- Maharashtra also has a bicameral legislature with both a Legislative Assembly and a Legislative Council.

Correct Answer: Option 2 - Gujarat has only one house in its state legislature.