Two students conducted studies to determine the amount of bacteria in hamburgers cooked to different internal temperatures. The students cooked 3 hamburgers: 1 rare, 1 medium, and 1 well-done. The students then took a core from the center of each hamburger and placed each core in a separate petri dish with nutrient agar. Each dish was incubated until colonies formed. The students hypothesized that the rare hamburger core would generate the most bacteria colonies. Eight hundred colonies grew in the dish containing the rare hamburger core, 400 colonies grew in the dish containing the medium hamburger core, and 0 colonies grew in the dish containing the well-done hamburger core. What is the most appropriate next step for the students to take in this study?
A. Accept the results; one trial is all that is necessary to test a hypothesis.
B. Accept the results; the results of this experiment support their hypothesis.
C. Perform more trials using a different type of meat, under the same conditions as the first experiment.
D. Perform more trials using the same type of meat, under the same conditions as the first experiment.
Answer: D