Algebra-1

Question Analysis
This question involves identifying causation in a controlled scientific experiment.
The main focus is on recognizing that a direct, repeatable relationship between variables (height and fall time) with a clear physical mechanism is causation.

Key Concept Explanation
Causation is confirmed when a variable (height) is manipulated, and a corresponding change in another variable (fall time) is observed, with a logical mechanism explaining the link (gravity in this case).
In physics, such relationships are often causal because they follow fundamental laws, and experiments can be repeated to verify consistency.

Step-by-Step Solution
Analyze the experiment: The class intentionally changes the height (independent variable) and measures fall time (dependent variable).
Evaluate the mechanism: Gravity explains why greater height leads to l...