An uncontrolled intersection is one where there are

Answer: C — no traffic signs or signals.

An uncontrolled intersection is a type of intersection where there are no traffic signs or signals to regulate traffic flow. This means that drivers must rely on their own judgment and follow the right-of-way rules to safely navigate through the intersection. Option A is incorrect because traffic signals and a stop sign would indicate a controlled intersection, while option B is incorrect because yield signs still provide some regulation of traffic flow. Option D is also incorrect because only a stop sign still provides some control of traffic, while an uncontrolled intersection has no signs at all.