____ refers to a device to assess the extent to which a goal is accomplished.

A) Attainable
B) Measurable
C) Realistic
D) Timebound

Measurable refers to a device or a way to assess the extent to which a goal is accomplished. It is important to have measurable goals as it helps in tracking progress and understanding if the goal has been achieved or not. Options A, C, and D refer to different aspects of setting SMART (Specific, Measurable, Achievable, Realistic, Time-bound) goals.