Final answer:
Vindija Cave in Western Europe provides evidence for genetic continuity between Neanderthals and modern humans, supporting the theory that they interbred.
Step-by-step explanation:
The site in Western Europe that may offer evidence for genetic continuity between Neanderthals and modern humans is B. Vindija Cave. This site contains Neanderthal remains that have provided genetic evidence linking Neanderthals to modern humans, supporting the theory of interbreeding. Neanderthal DNA segments have been discovered among people in Europe and Asia, and the presence of their genetic material in modern humans suggests a significant level of genetic exchange.