Final answer:
The fossil type that would contain actual body parts is D. Original Remains, which are samples of actual organic material preserved in special conditions, such as in amber or ice, rather than imprints or casts.
Step-by-step explanation:
The type of fossil that would contain actual body parts preserved in rocks, ice, or amber is D. Original Remains. Original remains are preserved parts of plants and animals that have not gone through the typical fossilization processes like molds, casts, or mineral replacement. Instead, these fossils include parts of the organism itself, such as bones, teeth, or entire bodies, that have been preserved through exceptional conditions.
For example, insects can be trapped and preserved in tree resin that hardens into amber, animals can be entrapped in tar pits, or whole organisms can be instantly frozen in ice, keeping their body parts intact.
Biological anthropologists and paleontologists often study these original remains to gather information about past life on Earth. They provide a wealth of information because they include actual tissue or structural parts of ancient organisms. When compared to other fossil types, such as molds and casts, original remains are rare because they require very specific environmental conditions to prevent normal decomposition and preserve the organism's body.