Question

the scientific method requires that an experiment be measurable, observable, and ______. options: informative, modern, repeatable, complicated.

Explanation:

The scientific method emphasizes that experiments should be repeatable so that other researchers can conduct the same experiment to verify results. "Informative" is not a core requirement, "modern" is irrelevant to the scientific method's experimental criteria, and "complicated" is not a desired characteristic for a valid experiment.

Answer:

C. repeatable