Explanation:

- The Lok Sabha is the lower house of the Parliament of India. It does not directly appoint the Prime Minister but plays a crucial role. The leader of the majority party or coalition in the Lok Sabha is usually appointed as the Prime Minister.

- President: The President of India formally appoints the Prime Minister. This is done by inviting the leader of the party or coalition with a majority in the Lok Sabha to form the government.

- The Parliament consists of both the Lok Sabha and the Rajya Sabha (Upper House). It does not directly appoint the Prime Minister but can influence his/her choice through majority support.

- Citizens of India participate in elections to choose their representatives, but they do not directly appoint the Prime Minister.