Question

what term represents the part of an experiment that doesnt change from one trial to the next?
independent variable
dependent variable
hypothesis

Explanation:

An independent variable is manipulated by the experimenter and can change. A dependent variable changes in response to the independent variable. A hypothesis is a proposed explanation. The part of an experiment that doesn't change from one trial to the next is a constant (not listed here, but by process - of - elimination, the given options are incorrect). However, among the given options, none is correct as described in the question. But if we assume the closest concept in a wrong - answer context, an independent variable is somewhat stable in the sense that it is the variable the experimenter controls and is not supposed to randomly vary during the course of the experiment in an uncontrolled way.

Answer:

None of the above options are correct as the correct term is "constant". But if forced to choose from the given ones, the independent variable is the closest in the sense of being a controlled factor.