ClosenessCentrality[g] gives a list of closeness centralities for the vertices in the graph g.
CMYKColor[cyan, magenta, yellow, black] is a graphics directive which specifies that graphical objects which follow are to be displayed in the color given. CMYKColor[c, m, y, ...
ColorFunctionScaling is an option for graphics functions that specifies whether arguments supplied to a color function should be scaled to lie between 0 and 1.
ColumnAlignments is an option for the low-level function GridBox that specifies how entries in each column should be aligned.
CompilationOptions is an option for Compile that specifies settings for the compilation process.
Compiled is an option for various numerical and plotting functions which specifies whether the expressions they work with should automatically be compiled.
ComplexInfinity represents a quantity with infinite magnitude, but undetermined complex phase.
Compress[expr] gives a compressed representation of expr as a string.
ContentSelectable is an option to constructs such as Inset, Graphics, and GraphicsGroup that specifies whether and how content within them should be selectable.
ContraharmonicMean[list] gives the contraharmonic mean of the values in list.ContraharmonicMean[list, p] gives the order p Lehmer contraharmonic mean.