Step 1: List out the years quickly.
Rowlatt Act came in 1919, Khilafat Movement started in 1919 and continued to 1924, Gandhi Irwin Pact was signed in 1931, and Poona Pact was signed in 1932.
Step 2: Line them up in order.
Putting these years in increasing order gives us Rowlatt Act first, then Khilafat Movement, then Gandhi Irwin Pact, then Poona Pact. That is II, IV, I, III.
Step 3: Match with the options.
Scanning the four options, only option (C) reads II, IV, I and III, which is exactly the order we worked out.
Hence, the correct answer is option (C).