To calculate the volume of the iron block, you can use the formula:
\[ \text{Volume} = \frac{\text{Mass}}{\text{Density}} \]
Given that the mass of the iron block is 16,000 kg and the density of iron is 7,874 kg/m³, you can substitute these values into the formula:
\[ \text{Volume} = \frac{16,000 \text{ kg}}{7,874 \text{ kg/m}^3} \approx 2.03 \text{ m}^3 \]
So, the correct option is:
2.03 m³ (or 2.03 m cubed)