Not Realistic, Like an Option or Course of Action

This page is the CodyCross answer for the clue below from Pet Shop, Group 344, Puzzle 2 (Ball Python).

Question is: Not Realistic, Like an Option or Course of Action

and the answer is: NONVIABLE

Word Meaning:

NONVIABLE — Not viable: not capable of independent life; not practicable.

Definitions from Wiktionary.