Algebra-1

Question Analysis
This question involves identifying causation in a controlled culinary experiment with a clear mechanism.
The main focus is on recognizing that manipulating yeast quantity (the cause) directly leads to changes in loaf size (the effect) due to a known biological process.

Key Concept Explanation
Causation is confirmed when a variable (yeast amount) is intentionally changed, and a corresponding change in another variable (loaf size) is observed, with a scientific explanation (yeast fermentation produces gas, expanding dough).
The experiment controls other factors (e.g., temperature, flour amount), ensuring the effect is due to yeast alone.

Step-by-Step Solution
Analyze the experiment: The amount of yeast is deliberately increased, and loaf size is measured as the outcome.
Evaluate the mechanism: Yeast’s role in fermentation (releasing gas) directly explains why more y...