Why should teachers refrain from using "on-task" and "off-task" to describe behavior?

A) the terms are too specific of a description
B) the terms cannot be defined completely
C) the terms describe status, rather than behavior
D) the terms are objective rather than subjective

On-task

The state of focusing and actively engaging in a particular task or activity.

Off-task

Behavior or activity that is not focused on the task or objective at hand, often resulting in decreased productivity or learning.

Behavior

The actions, reactions, or mannerisms made by an organism, individual, or system in response to the environment or stimuli.