One student lifts a rock and skips it across a stream. One student thinks about rocks and writes down his opinion. Two students study a rock and then compare their observations. Two students remove rocks from a garden and then plant flowers.
I gave my students this multiple choice question: Which of these best demonstrates the characteristics of science?

Only one answer is correct among these 4 choices:
- One student lifts a rock and skips it across a stream.
- One student thinks about rocks and writes down his opinion.
- Two students study a rock and then compare their observations.
- Two students remove rocks from a garden and then plant flowers.

Could you tell me which one is correct?

Two students study a rock and then compare their observations.