The correct answer is option 2 - Rajya Sabha. In the Indian Parliament, there are two houses - the Rajya Sabha and the Lok Sabha. The Rajya Sabha is the upper house, while the Lok Sabha is the lower house.
Option 1 - Senate: This term is not applicable to the Indian Parliament. The term `Senate` is commonly used in other countries like the United States, but not in India.
Option 3 - House of Lords: This term is associated with the Parliament in the United Kingdom, not the Indian Parliament. The House of Lords is the upper house in the UK Parliament.
Option 4 - Legislative Assembly: This term refers to the lower house of the state legislature in India, not the upper house of the Indian Parliament. Each state in India has its own Legislative Assembly.
Therefore, the correct answer is option 2 - Rajya Sabha.