Select the option that is related to the third term in the same way as the second term is related to the first term.
PURPOSE : QWUTTYL :: SERVICE : ?

Given that PURPOSE: QWUTTYL:: SERVICE:?

We know that alphabet Position  A=1,B=2, C=3,D=4 .....Z=26

the given is represent in the form of alphabet Position 

  16 21  18 16 15 19 5 : 17 23 21 20 20 25 12 : 19 5 18 22 9 3 5: ?

from the above pattern is followed  alphabet Position increases +1, +2, +3, +4, +5, +6, +7

then ? = (19+1) (5+2) (18+3) ( 22+4) (9+5) (3+6) (5+7)

        = 20 7 21 26  14  9 12

? =   T G U Z N I L (represent in the form of the alphabet )

therefore? = TGUZNIL Ans