Choose the Most Reasonable Unit of Measure $( \mathrm { mm } , \mathrm { cm } , \mathrm { m } , \mathrm { km } )$

Multiple Choice

Choose the most reasonable unit of measure.
-Hammer length: 38 ......... $( \mathrm { mm } , \mathrm { cm } , \mathrm { m } , \mathrm { km } )$

A) $\mathrm { mm }$
B) $\mathrm { km }$
C) $\mathrm { cm }$
D) $m$