It was a unanimous decision.

Solution (By Examveda Team)

Unanimous : (of two or more people) fully in agreement.
Uncertain : not able to be relied on; not known or definite.
Partial : existing only in part; incomplete.
Discordant : disagreeing or incongruous.
Divergent : tending to be different or develop in different directions.

Antonym of Unanimous is Discordant