Question

which part of an organism is preserved in cast and mold fossils? skin bone muscle soft tissue

Explanation:

Cast and mold fossils form when an organism's hard parts (like bone) leave an impression in sediment that later mineralizes. Soft tissues (skin, muscle, other soft tissue) decay too quickly to form these types of fossils, as they lack the rigid structure to create a lasting mold or cast.

Answer:

B. bone