Answer: B.) Went extinct
Step-by-step explanation:
Neandertals were a subspecies of the the ancestors of modern humans and they occupied Eurasia while they were alive up to 40,000 years ago.
It was originally thought that Europeans may have descended from them but this was found not to be true even though traces of their DNA exist in very small quantities in Europeans. Rather they went extinct due to multiple factors including possible conflict with modern humans.