The pairing that accurately matches a bio molecule polymer with its monomer subunit would be B. Protein and amino acids.
So what I know is that enzyme and substrate are like lock and key meaning that when the active site of the enzyme changes, the enzyme will not fit to the substrate which will lead the enzyme to denature. Hope this helps.
When rocks returns to the Earth's mantle, they can eventually melt and become magma. Heat and Pressure are the main factors that controls this change
Density = mass / volume
Density = (78g) / (23cm^3)
Density = 3.4g/cm^3
I’m pretty sure it would be B