I think the correct answer would be D. In the process of petrification, a tree burning is not included. Petrification is a process that involves organic materials turning into fossils by replacing the original contents of a certain object with minerals.
I think that the best answer here would be:
the diaphragm
Explanation:
Humus content is another characteristics
The karyotype is a test that provides information on the number, size and shape of chromosomes in a sample of body cells. It can be used to find out whether a fetus has some chromosome defects that could cause developmental problems, birth defects or disability. It can also be used for determining the sex of the baby.