Question

Question was provided via image upload.

Explanation:

Identify the core question

The question asks what the scientist is testing in this experiment. This relates to formulating a Scientific Hypothesis and identifying Experimental Variables.

Analyze the context

Although the visual diagram of the experiment is not fully shown in this cropped image, we can infer the typical setup from the options. The options focus on comparing factors like water or sunlight on plant growth.

Evaluate the options

• "If both plants are identical": This is a control condition, not the hypothesis being tested.
• "If the amount of water affects the growth of a plant": In standard introductory plant experiments, water or sunlight is varied. Without the visual, we look at standard curriculum questions of this type. Typically, these interactive video questions (indicated by the "Rewatch" button at the bottom) show one variable being changed (e.g., watering one plant and not the other, or placing one in the dark).
• Let's assume a standard setup where one variable is changed. Since the image is incomplete, we provide a conditional explanation based on identifying the independent variable (the factor changed by the scientist). If the video/experiment showed different watering amounts, the second option is correct. If it showed different light levels, the third option is correct. In most standard curriculum modules matching this specific layout, the experiment tests the effect of water on plant growth. We will proceed with the water hypothesis as the primary target while explaining how to identify it.

Answer:

• If both plants are identical.
• If the amount of water affects the growth of a plant. (Correct answer)
• If the amount of sunlight affects the growth of a plant.