Correct Answer: L S B E S L D

Solution : Given:
B _ E E S _ E D _ L E _ _ S E D B _ E E S S E _

To fill the series we have to divide the series – B _ E E S _ E D / _ L E _ _ S E D / B _ E E S S E _

Let's check each option –
First option: S E B E S L D; B S E E S E E D / B L E E S S E D / B L E E S S E D (No repeated pattern has been found)
Second option: E B S E S L D; B E E E S B E D / S L E E S S E D / B L E E S S E D (No repeated pattern has been found)
Third option: L S B E S L D; B L E E S S E D / B L E E S S E D / B L E E S S E D ( BLEESSED is repeated in the series)
Fourth option: E E B S S L D; B E E E S B E D / S L E S S S E D / B L E E S S E D (No repeated pattern has been found)

So, the series becomes→BLEESSEDBLEESSEDBLEESSED. Hence, the third option is correct.