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Warning signs are usually diamond-shaped, with the exception of the railroad crossing sign, which is:

A. Octagonal
B. Rectangular
C. Circular
D. Cross-shaped

Answer :

Final answer:

Warning signs on roads are usually diamond-shaped, but the railroad crossing sign is cross-shaped.

Explanation:

The question was about the shape of various road signs, particularly the railroad crossing sign. Warning signs on roads are often diamond-shaped, but certain ones like the railroad crossing sign are not. The railroad crossing sign is of a unique shape, it is Cross-shaped.

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