Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
S O _ _ T A S _ _ A T A _ _ N A T _ _ O N A _ _
1
NAONSOTASA
2
NAONSOASTA
3
NAONSOSATA
4
NAONSOASON
Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
S O _ _ T A S _ _ A T A _ _ N A T _ _ O N A _ _