Evolution leaves:

Explanation

Evolution provides clear and observable evidence that is well-documented through scientific research. This evidence includes fossil records, comparative anatomy, genetic information, and biogeographical distributions, all of which support the theory of evolution.Option B, "Clear, observable evidence," is correct because these findings offer tangible proof that species have evolved over time. Option A, "No observable evidence," is incorrect as it ignores the substantial evidence available. Option C, "Vague, hypothetical signs," is also incorrect because the evidence is concrete and observable. Lastly, Option D, "Confusing, random patterns," is incorrect because evolutionary patterns are systematic and informative rather than random and confusing.