Which of these describes something that would increase the validity of an experiment?

A. studying lions instead of tigers

B. presenting your results to the class

C. having no controls for the experiment

D. repeating your experiment many times

Repeating your experiment many times describes something that would increase the validity of an experiment.

Option: (D)

Explanation:

In order to prove that an experiment is valid, it has to produce the same result every single time it is conducted with the same variables involved and under the same given external conditions. If an experiment exhibits the desired result once and fails to give the same result the second time, it cannot be deemed to be valid. Hence, carrying out the experiment multiple times with the same end result increase the validity of the result.