Correct Answer - Option 4 : a d a d s
According to the given information we have to check the options one by one :
Option 1) D M S S D M D S A M A S
Option 2) D M S S D M A S D M A S
Option 3) D M D S D M D S D M A S
Option 4) D M A S D M A S D M A S
Here, option (4) is giving a pattern of dmasdmasdmas.
No other option is giving any particular pattern.
Hence, the correct answer is "a, d, a, d, s".