In The Sherlock Society, what allows Alex to determine the route the truck used to reach the dump site?

• A. The coffee cup
• B. A map found in the truck
• C. The truck's tire tread
• D. The license plate

Answer: (A)

The idea being tested is how everyday objects can carry movement clues that let you reconstruct a route. A coffee cup works best here because it acts as a portable breadcrumb that ties the truck to real, location-specific stops along the way.

Think about the clues the cup can carry: the brand or sleeve from a particular coffee shop chain, a receipt or loyalty mark, and even the timing suggested by how recently the cup was used. If that chain has only certain locations along the highway between the origin and the dump site, the stops the truck made must lie along that specific corridor. By matching the cup’s brand and any time clues to those real locations, Alex can piece together which towns the truck visited and in what order, revealing the route.

In contrast, a map found in the truck might give the route directly but wasn’t the clue available here; tire tracks point to the vehicle’s movement but not the exact path, and a license plate identifies the truck, not the path it took. The coffee cup, with its location-linked details, uniquely ties the truck to a particular sequence of stops, making it the strongest clue for reconstructing the route.