Which cross street is at 5900 S?

• A. 29th St
• B. 50th St
• C. 63rd St
• D. 59th St

Answer: (C)

In this grid, the S suffix indicates a location south of the baseline, and the numbers show how far you are along the north-south axis. The line at 5900 S runs north–south and meets the east–west cross streets at specific names. In this portion of the Major Street hundred-block system, the cross street that intersects the 5900 S line is 63rd Street, which is why that option is the best answer. The other streets listed would intersect different north–south lines and do not line up with 5900 S in this area.