Answer
(d) Impulse has units of (a) $\mathrm{kg.m/s}$, or (b) $\mathrm{N.s}$; which is (c) the same as momentum.
Work Step by Step
Impulse is the change in momentum of a body.
Thus, it has the same unit as momentum i.e. $\mathrm{kg.m/s}$ or $\mathrm{N.s}$.