Question

which options best define calibration? select all that apply. it is a number that describes the physical property of a substance that has been measured. it is a determination of the size, value, or amount of something being measured. it is the method of ensuring the accuracy of equipment by using a known standard. it is the process of evaluating and adjusting equipment used for measurement.

Explanation:

Calibration involves using known - standards to check and adjust measurement equipment for accuracy. Options C and D correctly describe this process. Options A and B describe measurement rather than calibration.

Answer:

C. It is the method of ensuring the accuracy of equipment by using a known standard.
D. It is the process of evaluating and adjusting equipment used for measurement.