Final answer:
The smoothest lane to choose when there are three lanes is the middle lane. However, driving conditions can vary.
Step-by-step explanation:
The best lane to choose for the smoothest driving when there are three lanes to choose from is the middle lane. The middle lane is generally considered the safest and least congested lane, as it allows drivers to have more options for maneuvering around slower vehicles or obstructions.
Another important factor to consider when choosing a lane is the flow of traffic. If the majority of cars are driving in the middle lane, it is usually a good indication that it is the smoothest lane to choose.
However, it is important to note that driving conditions can vary and it is always best to use judgment and adjust accordingly.