For the hominid lineage – all of our ancestors since our split with the chimpanzee/bonobo lineage – the fossil evidence for the human-chimpanzee last common ancestor (LCA) is scarce because: 1. Apes were extremely rare during the Miocene. 2. These apes lived in a narrow range of environments that were not preserved well in the fossil record (like forests). 3. The LCA lived in the Paleocene, a time from which we have essentially no fossil record. 4. Most of the primates known from the mid-Miocene are Old World monkeys, who are from a different Linnaean family than we are.

The fossil proof for the human-chimpanzee last common ancestor (LCA) is rare and scarce due to: These apes lived in an environment of tight or narrow range that was not preserved well in the fossil record.

Fossil monkeys and prosimians were rare in the Miocene, however, apps were normal and dominant. Option 1 is inaccurate.

The majority of the apps known from the mid-Miocene are Old World monkeys, who are from an unexpected Linnaean family in comparison to we are is an incorrect statement so it is inaccurate.

The LCA lived in the Paleocene, a time from which we have got a number of the fossil record. so Option 3 is incorrect

Thus, the correct answer is - These apes lived in an environment of tight or narrow range that was not preserved well in the fossil record.