Correct Answer: FOFLOLW

Solution : Given:
_FO_LLWF_OOL_WFF_O_L_

To fill the series, we have to divide the series – _FO_LLW / F_OOL_W / FF_O_L_
Let's check each option –
First option: FOFLOLW; F FO O LLW / F F OOL L W / FF O O L L W (FFOOLLW is repeated in the series.)
Second option: FFLLOOW; F FO F LLW / F L OOL L W / FF O O O L W (No repeated pattern has been found.)
Third option: FFOLLOL; F FO F LLW / F O OOL L W / FF L O OL LL (No repeated pattern has been found.)
Fourth option: FOWLLFW; F FO O LLW / F W OOL L W / FF L O F L W (No repeated pattern has been found.)

So, the series becomes→FFOOLLWFFOOLLWFFOOLLW. Hence, the first option is correct.