To answer this question we need to analyze the function of each element in the list some are cofactors others are enzymes and this gives also a clue of their function, an enzyme will catalyze a reaction meanwhile a cofactor is a non-protein element that helps the enzyme (protein) to carry out its catalytic function.
A. Tetrahydrobiopterin: is a cofactor that helps degradation of fenilalanin and biosynthesis of some neurotransmitters, helping hydroxylases.
B. NAD+: Is also a cofactor and also is involved in energy storage.
C. S-adenosylmethionine (SAM): Is a cofactor, that helps in the transfer of methyl groups.
D. FAD: Is a coenzyme, involved in energy transfer and in redox reactions.
E. Biotin: Is a vitamin that intervenes in the carbohidratrate and fatty acids metabolism
F. Tetrahydrofolate: Is a coenzyme that is involved in the reaction with amino acids and nucleic acids.
Preferred for transfer of methyl groups. C
Transfers CO2. E
Hydride transfer. B
Transfers single carbon units. F
Hydrogen transfer.D
Participates in redox reactions. A, but also B and D are in this category as FADH2, and NAD+ acts as ion donors or accept ions, so the three are correct.
Finally, we must not forget that hydride transfer, hydrogen transfer imply the transfer of hydrogen and are also involved in redox reactions, so the three concepts must be aproached carefully.