The Romans had a strong army of men armed with a shield and flail.
Please select the best answer from the choices provided
OT
OF

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.

answer; specific deterrence;

answer; use multiple stimuli;

answer; self-serving bias;