At a controlled intersection, a flashing yellow light means?

Answer: B — Slow down and proceed with caution

A flashing yellow light does not mean to stop completely, as you can see with option A. A flashing yellow light also does not necessarily mean to yield to vehicles in the intersection, as you can see with option C. However, it does mean proceed with caution, which is why option B is correct. It is important to slow down and proceed with caution because other vehicles may also be approaching the intersection from different directions. Option D is also not correct as it states to make a complete stop, which is not necessary at a flashing yellow light.