SAT Question 4bb25495: Distributions, Center & Spread answer and explanation with Desmos solution

Choice B is correct. The mean land area of these $5$ countries is equal to the sum of the land areas of these countries, or $2.0+21+61+26+0.44$, divided by the number of countries in the table, $5$, or $\frac{2.0+21+61+26+0.44}{5}$. Combining like terms in the numerator yields $\frac{110.44}{5}$, which simplifies to $22.088$ square kilometers. This value, when rounded to the nearest square kilometer, is $22$.