The correct chronological order in which the following kings ruled in India is 1-2-3-4.

Let`s dissect the options to better understand why option 1 is correct and the other options are incorrect:

Option 1: 1-2-3-4

This option suggests that Bimbisara ruled first, followed by Mahapadma Nanda, then Kanishka I, and finally Skandagupta. This order aligns with historical records and is therefore the correct answer.

Option 2: 4-3-2-1

This option suggests that Skandagupta ruled first, followed by Kanishka I, then Mahapadma Nanda, and finally Bimbisara. This order is incorrect and does not align with historical records.

Option 3: 2-3-4-1

This option suggests that Mahapadma Nanda ruled first, followed by Kanishka I, then Skandagupta, and finally Bimbisara. This order is incorrect and does not align with historical records.

Option 4: 3-1-4-2

This option suggests that Kanishka I ruled first, followed by Bimbisara, then Sk