The correct chronological sequence of the events referenced in the Indian freedom struggle is 3-2-1: Second Round Table Conference, Quit India Movement launched, and Mutiny in Royal Indian Navy. The Second Round Table Conference occurred in 1931, aimed at discussing constitutional reforms in India. It was followed by the Quit India Movement in 1942, a significant mass protest calling for an end to British rule, and subsequently, the Royal Indian Navy mutiny in 1946 symbolized the growing discontent and unrest among the armed forces that reflected the broader anti-colonial sentiment. This timeline highlights the escalation of nationalist movements and the response of colonial powers, crucial for understanding the dynamics of India's struggle for independence as covered in UPSC study materials.