The correct answer is option 1: 1954. In 1952, the Indian Parliament was established and the lower house was known as the "House of the People". Two years later, in 1954, the lower house was officially named as "Lok Sabha", which translates to "House of the People" in Hindi. This change in name was made to reflect the cultural and linguistic diversity of India and to foster a sense of inclusiveness among the citizens. It is worth noting that the term "Lok Sabha" has been used since then to refer to the lower house of the Indian Parliament, which represents the elected members of the people.