Ratios, rates, proportional relationships, and units SAT question

Choice B is correct. Since $1$ mile is equal to $1,760$ yards, $1$ square mile is equal to ${1,760}^2$, or $3,097,600$, square yards. It’s given that the park has an area of $11,863,808$ square yards. Therefore, the park has an area of $(11,863,808\text{square}\text{yards})(\frac{1\text{square}\text{mile}}{3,097,600\text{square}\text{yards}})$, or $\frac{11,863,808}{3,097,600}$ square miles. Thus, the area, in square miles, of the park is $3.83$.

Choice A is incorrect and may result from conceptual or calculation errors.

Choice C is incorrect. This is the square root of the area of the park in square yards, not the area of the park in square miles.

Choice D is incorrect and may result from converting $11,863,808$ yards to miles, rather than converting $11,863,808$ square yards to square miles.