Choice A is the correct answer. Magnitude of $r$.

1. Strength: Determined by absolute value $|r|$.
2. Compare: $|-0.9| = 0.9$, $|0.8| = 0.8$, etc.
3. Result: 0.9 is closest to 1.

💡 Strategic Tip: The sign tells direction; the number tells strength. -0.9 is stronger than +0.8.

Choice B is incorrect.Choice C is incorrect.Choice D is incorrect.