Final Answer:
The statement "They are not made up of cells" supports the classification of viruses as nonliving. Option A is the answer.
Step-by-step explanation:
Viruses lack the essential characteristics of living organisms. Unlike cells, viruses are not composed of cellular structures such as cytoplasm or organelles. Instead, they consist of genetic material (either DNA or RNA) encased in a protein coat called a capsid. Viruses do not carry out metabolic processes, grow, or undergo cell division independently. They are obligate intracellular parasites, relying on host cells to reproduce and carry out their life cycle.
The statement "They are not made up of cells" directly aligns with the criteria used to classify viruses as nonliving entities. It underscores the fundamental distinction between viruses and living organisms, contributing to the understanding of viruses as acellular entities that lack the characteristics of life.
Option A is the answer.