Final answer:
The elevator with a lower maximum speed but fewer stops.
Step-by-step explanation:
In this scenario, we need to consider the concept of velocity and the number of stops, as well as the relationship between speed and time. The elevator with the higher maximum speed but more stops will take longer to reach the 20th floor, because it has to make more stops along the way. While the elevator with the lower maximum speed but fewer stops may take less time overall, as it can maintain a more consistent speed without stopping. So, the answer to this question would be option B) The elevator with a lower maximum speed but fewer stops.