OPT: (i) animals; (ii) plants; (iii) bacteria; (iv) nonliving things; (v) gravity; (vi) density; (vii) the skin; (viii) insects;
Given those answer options, answer the question: Fact 1: Viruses infect and live inside the cells of living organisms. Fact 2: Plants and animals are organisms. Given the two facts above, what do viruses infect?
A:
(i)