What is shown in the image?

The image shows a red and white octagonal sign, which is indicative of a stop sign. The correct answer is "C. Of a stop sign ahead" because the image represents a common road sign that alerts drivers to an upcoming stop sign. Stop signs require drivers to come to a complete stop, checking for cross-traffic or pedestrians before proceeding. This sign plays a crucial role in ensuring traffic safety at intersections.

Option A, "Of a temporary stop ahead," is incorrect as there is no indication in the image that the stop is temporary. Option B, "Of a stop sign controlled by a traffic control person," is not applicable as there is no person shown controlling the traffic on the sign. Option D, "Of a yield sign ahead," is also incorrect since yield signs have a different shape (triangular) and a different purpose from stop signs. Yield signs require drivers to slow down or stop when necessary to yield the right of way to other traffic.