GJU
HMP
PMO
RJL
Answer is Wrong!
Answer is Right!
The correct answer is (a) GJU.
The letter series AFI, JOR, MRU follows a simple pattern: each letter is three places forward in the alphabet from the previous letter. Therefore, the next letter in the series is GJU.
Option (b) HMP is incorrect because H is not three places forward from A in the alphabet.
Option (c) PMO is incorrect because P is not three places forward from J in the alphabet.
Option (d) RJL is incorrect because R is not three places forward from M in the alphabet.