question 14 of 25\nwhich prefix indicates the smallest part of a unit?\na. nano-\nb. mega-\nc. kilo-\nd…

Brief Explanations:

Nano - represents $10^{-9}$, mega - represents $10^{6}$, kilo - represents $10^{3}$, and micro - represents $10^{- 6}$. Since $10^{-9}<10^{-6}<10^{3}<10^{6}$, nano - indicates the smallest part of a unit.

Answer:

A. Nano-