[tex]Speed-velocity\ would\ be\ lebeled\ with\ a\ vector\\\\v=\frac{d}{t}\\\\d-distance\\t-time\\\\A.\ \frac{km}{h}\to\frac{d}{t}\\\\B.\ mph\to\frac{d}{t}\\\\C.\ \frac{miles}{gallon}\to\frac{d}{V}\ (V-volume)\\\\D.\ \frac{cm}{s}\to\frac{d}{t}\\\\Answer: \fbox{C.}[/tex]
