D should be correct....
hopefully this helps you.
A monomer is the basic unit that binds chemically to other molecules to form a polymer .
For lipids, the monomers are glycerol and fatty acids.
This might help you understand
more https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=15&cad=rja&uact=8&ved=0CHgQFjAOahUKEwi...
Approx. 27 years i really hope this helped!!
The process by which unspecialized cells become specialized into one of many different types of cells, such as neurons or epithelial cells.
