Concept:The Lok Sabha Speaker is the presiding officer of the lower house of Parliament. Explanation:The 17th Lok Sabha was formed after the 2019 general elections.Om Birla, a BJP MP from Rajasthan, was unanimously elected as its Speaker.He was proposed by Prime Minister Narendra Modi on the third day of the session.Before him, 16 people had served as Lok Sabha Speaker.Answer:Om Birla (Option C)