Final answer:
It takes 32 seconds to travel 800 m at a speed of 25 m/s.
Step-by-step explanation:
To determine the time it takes to travel 800 m at a speed of 25 m/s, we can use the formula:
Time = Distance / Speed
Plugging in the values, we get:
Time = 800 m / 25 m/s = 32 s
Therefore, the correct answer is: a. 32 s