Option 1 -> Dust can accumulate quickly even in a new place, so this doesn't definitively prove the shop is old.
Option 2 -> Chipped paint, especially in multiple places, is clear physical evidence of aging and weathering over time, proving the shop is not new.
Option 3 -> "Shabby" describes the general worn condition but is more subjective and doesn't specifically indicate age.
Option 4 -> The color of a sign (green) has nothing to do with whether the shop is new or old.
Hence, Option 2 -> Chipped paint is objective, tangible evidence of deterioration over time. The passage specifically mentions "The paint was chipped at many places; you could barely see the second 's'," which clearly demonstrates the shop has weathered years of exposure and is therefore not new -> correct