The document discusses the evolutionary relationship between chimpanzees and hominids. It states that around 7-8 million years ago, a common ancestor of chimpanzees and hominids divided into two descendant lines, with one leading to gorillas and chimpanzees, and the other to early human ancestors known as hominids. Therefore, the document concludes that the option "Chimpanzees and hominids share a common ancestor" is correct.