Which of the following is not a reason why the ‘missing links’ of human evolution are still missing?

Many of the so-called ‘missing links’ that have been found are in fact only fragments of fossils that cannot provide any substantive information.

Many of these found ‘missing links’ have been shown to be either human or non-human.

Evolutionists have not found anything that they even tried to claim as a missing link.

The supposed human ancestors do not form a direct evolutionary line.