what type of fossil might be frozen and contain skin and hair? mineral replacement altered hard parts…

Brief Explanations:

Original preservation fossils can include soft - tissue remains like skin and hair. This occurs when the organism is quickly frozen or otherwise protected from decay. Mineral replacement fossils involve minerals taking the place of organic material. Altered hard parts are changes to the hard structures of an organism. Trace fossils are signs of an organism's activity (e.g., footprints), not the organism itself.

Answer:

original preservation