Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
LGG, PJL, KMO, OPT, LSG, ?
Answer & explanation
Correct answer: option 1

Explanation:
LGG, PJL, KMO, OPT, LSG, ?
The logic followed here is :
L → (+4) → P → (+4) → K → (+4) → O → (+4) → L→ (+4) → P
G → (+3) → J → (+3) → M → (+3) → P → (+3) → S → (+3) → V
G → (+5) → L → (+5) → O → (+5) → T → (+5) → G → (+5) → L
So, the letter-cluster that replaces the (?) to complete the series is "PVL"