Insects often get stuck in the sap of ancient trees. the sap along with the insect inside harden forming a fossil. what kind of fossil is this?

cast
i think it is.
mold
trace

You are correct in your assumption. The kind of fossil that has been described in the question is Crystallization. It is also called crystallized fossil. The correct option among all the options that are given in the question is the second option. I hope that this answer has come to your help.

Themes; subfields is the answer

Build a market-oriented economy;