Question

1. the incompleteness of the fossil record suggests:

evolution is impossible to study
fossil evidence is unreliable
fragmentary evidence can still support evolutionary principles
we know nothing about prehistoric life

Explanation:

Fossil records are incomplete, but the existing fragmentary evidence can still provide insights into evolutionary processes. Evolution is not impossible to study as there are other lines of evidence like molecular biology and comparative anatomy. Fossil evidence is reliable within its limitations. And we do know something about pre - historic life from the available fossils.

Answer:

Fragmentary evidence can still support evolutionary principles