Question

Which of the following is the largest unit of length?

• A. $\mathrm{milimeter}\left(mm\right)$
• B. $\mathrm{centimeter}\left(cm\right)$
• C. $\mathrm{meter}\left(m\right)$
• D. $kilometer\left(km\right)$

Answer 1

The correct option is D

$kilometer\left(km\right)$

The largest unit of length:

1. All the given options are units of length.
2. As we know,

$$\begin{gathered} 1km=1000m \\ 1m=100cm \\ 1cm=10mm \end{gathered}$$

3. So, it is clearly visible that $km$is the largest unit of length.

Hence, the correct answer is an option (D).