Texas DMV Written Driving Practice Test

A white diamond-shaped sign indicates a warning or caution ahead. Option A is incorrect because school zones are usually marked with fluorescent yellow-green signs. Option B is incorrect because construction zones are typically marked with orange signs. Option D is incorrect because pedestrian crossings are marked with yellow-green signs. The correct answer, C, is the only option that matches the description of a white diamond-shaped sign. These signs should not be ignored, as they are used to warn drivers of potential dangers on the road ahead.