Which of these markings are examples of three lane streets?

The correct choice illustrates a street configuration where the leftmost lane is delineated by solid yellow lines, which indicates that it is a three-lane street. This type of marking typically signifies that the center lane is often used for turning left, while the outer lanes are designated for moving traffic in both directions. Solid yellow lines indicate that crossing into that lane is not permitted, helping to clarify the flow of traffic.

Choosing this marking reflects an understanding of lane designations on multi-lane roads. It provides clear visual indicators to drivers about how to navigate the street safely and effectively. In contrast, other options may not specifically portray the structure of a three-lane street or do not conform to a standard lane layout recognizable to drivers.