A teacher wanted her students to investigate the effect of length of a simple pendulum on its time period. She guided her students to set up an experiment based on varying the factor of interest while holding the other factors constant across situations. Which of the following statements would be correct about the experiment they set up for this purpose?

Correct option is C

In an experiment, the dependent variable is the one that is measured or observed to determine the effect of the independent variable. In this case, the students are investigating the effect of the length of the pendulum on its time period.