Answer:
A. the fossil record is scarce
Explanation:
The precambrian is the eon that encompasses more years on Earth and ended 542 million years ago.
During those years, most of the life on Earth was single-celled or soft-bodied in the case of being multicellular.
From there, numerous orogenic changes have occurred on the planet and due to this and the lack of hard structures in organisms, the probability of fossil generation is minimal.
