INBDE (Integrated National Board Dental Examination) Practice Exam

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This molecule prevents any polymerization of MMA in the monomer by itself.

hydroquinone
benzoyl peroxide
water
ethanol

The correct answer is: hydroquinone

Hydroquinone is the correct answer because unlike the other options, it is a polymerization inhibitor specifically for methyl methacrylate (MMA). Benzoyl peroxide and water can act as initiators for polymerization, while ethanol can act as a co-solvent, aiding in the polymerization process. Therefore, these options are incorrect for preventing polymerization of MMA in the monomer by itself.