Although no one else gets the same results as I do, since I get the results in my experiments, it is still science. There is always a possibility a more advanced experiment might falsify any hypothesis. Starch, glycogen, and cellulose are glucose polymers. When a carbon chain has all the hydrogens it can hold, it is an unsaturated triglyceride. A protein is a polymer of amino acids.
Fats contain glycerol and fatty acids.
Both a and c are true. Both a and b are true. Both C and D are true. Both ionic and covalent bonds involve electrons in the outer shell. An atom involved in an ionic bond has an unequal number of electrons and protons.