All zebras have stripes, and the most widespread subspecies has the best–defined stripes. The stripes must therefore ...

Raheel on June 20 at 06:59PM

Can you go more into why C is incorrect?

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Emil-Kunkin on June 21 at 09:34PM

How does it strengthen the argument? I'm struggling to see how it makes it more likely that the striping is a visual signal.