SSC CGL 21-August-2017 Reasoning question 7

A series is given, with one word missing. Choose the correct alternative from the given ones that will complete the series as per dictionary.
?, Lifelike, Lifeline, Lifelong
Options:
1) Lifeless
2) Lifespan
3) Lifelost
4) Lifework
Correct Answer: 1 Lifeless


?, Lifelike, Lifeline, Lifelong

e comes first in dictionary.