The best and most correct answer among the choices provided by the question is the second choice "<span>permafrost preserves the organism in its intact form or with slight changes"
</span>The difference between a mold fossil<span> and a cast </span>fossil<span> is that </span>mold fossil<span> is formed when an object is placed into soft mud and is removed by decomposition or physical sources; a cast</span>fossil<span> happens when a </span>mold fossil<span> fills up with sediment.</span> <span> I hope my answer has come to your help. God bless and have a nice day ahead! </span>
Correct answer: D). The organism is buried in sediment and then dissolved by underground water
Mold is a copy of an organism, it is formed like the first layer of sediments harden and forms a mold. Then after that new layer of sediment fills and become hardens.
The fossil is left behind in sediment, which removes the remains of an organism from its surrounding material. The groundwater along with its mineral content dissolves the organic matter to form the fossil.
