1. Find the total number of steps taken per hour:
5 \, \text{steps} \times \frac{3600}{2} \, \text{seconds} = 9000 \, \text{steps per hour}
2. Divide the total distance traveled per hour by the number of steps to find the length of a single step:
\frac{5.4 \, \text{km} \times 1000 \, \text{m/km}}{9000 \, \text{steps}} = \frac{5400 \, \text{m}}{9000 \, \text{steps}} = 0.6 \, \text{m per step}
Answer:
\text{c. 0.6 m}