Question

what should you always watch out for when turning right?
bicyclists
a mother and her ducklings crossing the road
trucks making wide left turns
correct signal lights

Explanation:

When turning right, trucks making wide left turns can encroach into the right - turn lane or the area where a vehicle is turning right. This is a common and important hazard to watch out for as trucks have a larger turning radius and may not stay within their expected lane when making left turns, potentially colliding with a vehicle turning right. Bicyclists are more of a general road hazard but not as specific to right turns in this context. A mother and ducklings crossing is an unusual and less common scenario. Correct signal lights are about the driver's own signaling, not what to watch out for from others.

Answer:

C. trucks making wide left turns