Choice A is the correct answer. Use the slope formula $m = \frac{y_2 - y_1}{x_2 - x_1}$.

1. Substitute: Let $(x_1, y_1) = (2, 5)$ and $(x_2, y_2) = (4, 11)$.
2. Calculate: $m = \frac{11 - 5}{4 - 2} = \frac{6}{2} = 3$.

💡 Strategic Tip: Slope is "Rise over Run". The y-values go on top!

Choice B is incorrect because it is just the change in y ($11-5$). Choice C is incorrect because it flips the fraction (Run over Rise). Choice D is incorrect because it divides the x-difference by 1 or makes a calculation error.