<span>Glycerol is a sub-unit molecule of a Lipid
So, option C is your answer.
Hope this helps!
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Answer:A double convalescent bond is where two pairs of electrons are shared between the atoms rather than just one pair. Two oxygen atoms can both achieve stable structures by sharing two pairs of electrons as in the diagram.
Explanation:
Covalent bonds and it is between the hydrogens (hydrogen bonds)
The answer is caso4 and ca(C2H3O2)2