More bacteria will be destroyed. The results will be more reliable. A scientific journal will publish their work. The conclusion will lead to new discoveries.
I gave my students this multiple choice question: Three scientists conducted the same experiment to analyze the effectiveness of a cleaning agent on household bacteria. What is the main advantage of having the experiment repeated?

Only one answer is correct among these 4 choices:
- More bacteria will be destroyed.
- The results will be more reliable.
- A scientific journal will publish their work.
- The conclusion will lead to new discoveries.

Could you tell me which one is correct?

The results will be more reliable.