Option 1 -> Incorrectly matches C with I (Chalukyas) instead of III (Gupta rule), and D with III instead of I.
Option 2 -> Correctly matches all periods: 500-400 BCE with Magadha consolidation, 327-325 BCE with Alexander's invasion, 320 CE with Gupta dynasty beginning, and 500-600 CE with Chalukya rise.
Option 3 -> Incorrectly swaps A and B: places Alexander's invasion (327-325 BCE) in 500-400 BCE period and Magadha consolidation in Alexander's time.
Option 4 -> Incorrectly swaps multiple matches: A with IV, B with II, C with I, and D with III - reverses both early period events and medieval period developments.
Hence, Option 2: (A)-(II), (B)-(IV), (C)-(III), (D)-(I) -> This correctly aligns the chronological progression: Magadha's rise in the pre-Mauryan era (500-400 BCE), Alexander's invasion just before the Mauryan Empire (327-325 BCE), the start of the classical Gupta age (320 CE), and the emergence of the Chalukyas during the early medieval period (500-600 CE) -> correct