This sign prohibits entry to...
A)cycles and mopeds.
B)all two-wheeled vehicles.
C)cycles.Correct
# Explanation
The sign prohibiting entry to cycles (bicycles) is specific to vehicles without engines propelled solely by human power. Mopeds, although they have two wheels, have an engine and are regulated differently, so they are not included in this prohibition. The correct answer is **cycles**, since it is the specific category to which this traffic sign refers.