Q: Fact 1: Viruses are not cells at all, so they are neither prokaryotes nor eukaryotes. Fact 2: Viruses Viruses are the smallest agents of disease. Given the two facts above, what are not cells at all, so they are neither prokaryotes nor eukaryotes?

Available options: 1. Something with a head, thorax, and abdomen. 2. Microscopic organisms. 3. The smallest agent of disease. 4. Dead prehistoric beings. 5. female sex cells. 6. major threat to health. 7. remains of prehistoric life. 8. Something that smells like rotten eggs.
A:
3.