In an experiment with y as the control variable and z as the response variable, z is the variable that is not manipulated, but measured, and represents the data being recorded. Therefore, D. Z is the correct answer.
The correct answer is option D "Z".
Here's a breakdown of the terms and why D is the correct answer:
Control variable: This variable stays constant throughout the experiment and is not manipulated by the researcher. Its purpose is to isolate the effects of the manipulated variable on the response variable. In this case, y is the control variable.
Response variable: This variable is the one that changes or varies due to the manipulation of the independent variable. It is the data that the researcher measures and analyzes to determine the effect of the experiment. In this case, z is the response variable.
Step-by-step explanation:
Option A (y) is not correct because y is the control variable, and it is not manipulated but remains constant throughout the experiment.
Option B (Neither y nor z) is not correct because at least one variable needs to be measured in an experiment to analyze the results. Since y is the control variable, z must be the response variable and hence the measured data.
Option C (Both y and z) is not correct because only the response variable represents the data being recorded. While y is important for controlling the experiment, the recorded data is the response to the manipulation, which is z.