Step-by-step Solution:

The alphanumeric series is: HEC, JGE, LIG, NKI, ?

The pattern for each letter position is an increment of 2:

• First letter: H → J → L → N → P
• Second letter: E → G → I → K → M
• Third letter: C → E → G → I → K

Thus, the next term is PMK.

Answer: PMK