Final answer:
Macromolecules such as proteins, nucleic acids, and carbohydrates are both synthesized and broken down by reactions involving the removal or addition of water molecules, known respectively as dehydration synthesis and hydrolysis.
Step-by-step explanation:
The macromolecules that are put together by dehydration synthesis and taken apart by hydrolysis include proteins, nucleic acids, and carbohydrates. However, since lipids are generally not formed by polymerization of monomers like the other three classes of macromolecules, they would be less commonly involved in these specific types of reactions. Although certain complex lipids may be formed or broken down in processes that can involve the removal or addition of water, basic fats (triglycerides) are not typically synthesized or broken down via dehydration or hydrolysis reactions in the same way that proteins, nucleic acids, and carbohydrates are. So, options A (Proteins), B (Nucleic acids), and C (Carbohydrates) are all correct.