Question

during a conference presentation, a scientist described the materials that she used and how she performed her experiments.

which best explains why a scientist would share these details in a conference?

○ it tells the audience if the results support or contradict the hypothesis.
○ it tells the peers if the study is supported by mathematical models.
○ it informs the peers if the results are supported by other scientists.
○ it informs the audience if the study included controlled tests.

Explanation:

• Option 1: Describing materials and experiment procedures doesn't directly relate to whether results support the hypothesis (that's about results analysis, not methods).
• Option 2: Sharing materials and procedures isn't about mathematical models (mathematical models are about equations/algorithms, not experimental methods).
• Option 3: Describing one's own experiment materials and procedures doesn't inform about other scientists' support (that's about peer review or citations, not methods).
• Option 4: Explaining materials and how experiments were done (like controlled tests) shows if the study had proper experimental design (e.g., controlled variables), so this explains why sharing these details matters.

Answer:

D. It informs the audience if the study included controlled tests