Question

multiple choice question which is a comparison between an unknown quantity and a standard? measurement dependent variable hypothesis control

Explanation:

Measurement is defined as the process of comparing an unknown quantity with a standard. A dependent variable is what is measured in an experiment and changes based on other factors. A hypothesis is a proposed explanation. A control is a standard against which other conditions are compared in an experiment but not the comparison itself of an unknown - quantity to a standard.

Answer:

measurement