Choice "B" is correct. The coefficient of determination (R²) is the proportion of the total variation in the dependent variable (y) explained by the independent variable (x).Choice "c" is incorrect. The independent variable is not explained by the dependent variable. Changes in the independent variable drive the variation in the dependent variable. The coefficient of determination (R²) is the proportion of the total variation in the dependent variable (y) explained by the independent variable (x).Choice "d" is incorrect. The measure of proximity of actual data points to estimated data points is not the coefficient of determination. The coefficient of determination (R²) is the proportion of the total variation in the dependent variable (y) explained by the independent variable (x).Choice "a" is incorrect. The coefficient of determination (R²) is the proportion of the total variation in the dependent variable (y) explained by the independent variable (x), not the coefficient of the independent variable divided by the standard error of regression coefficient.