The correct answer is establish a scale.
D. establish a scale
The correct answer is (D) To establish a scale; to determine, test, or rectify the graduation of quantitative measurement instrument; to divide or mark with gradations, as on a meter, gauge, thermometer, etc. Also, determine the correct range, angle, or elevation for (a rifle, mortar, artillery gun, etc.) by observing where projectiles hit.
Calibrate comes from Arab galib (form).
Examples of use:
- They calibrated their measuring instruments before beginning.
- He used a set of standard weights to calibrate the balance.