What anatomy is labeled as letter D in the image below? 
Definitions:
Correlation Coefficient
A statistical measure that calculates the strength and direction of a linear relationship between two variables.
Linearly Related
Describes a relationship between two variables where a change in one variable causes a proportional change in another variable.
Correlation Coefficient
A numerical measure that indicates the extent of a statistical relationship between two variables, ranging from -1 to 1.
Box Plots
A graphical representation of the distribution of data based on a five-number summary: minimum, first quartile, median, third quartile, and maximum.
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