The purpose of the cell wall is to-- A. Regulate what goes into and out of a cell.
B. Control the functions of a cell.
C. Convert energy from food into energy for a cell.
D. Provide structure for a cell

The answer is D. Provide structure for a cell

This is what i found on google“ the monomers combine with each other via covalent bonds to form larger molecules known as polymers. in doing so, monomers release water molecules as byproducts. this type of reaction is known as dehydration synthesis, which means “to put together while losing water. in the process, a water molecule is formed.” i hope this you