Final answer:
Jon and Katarina use the same method for completing a lab report because they are both using scientific inquiry to conduct their experiments.
Step-by-step explanation:
Jon and Katarina use the same method for completing a lab report because they are both using scientific inquiry to conduct their experiments. The scientific method is a process that scientists follow to gather information, form hypotheses, test their hypotheses through experiments, and draw conclusions based on their results. It is a systematic and organized approach that can be applied to various scientific disciplines, including chemistry and geology.