Q: What are not cells at all, so they are neither prokaryotes nor eukaryotes?\nOptions:\n- (A) Something with a head, thorax, and abdomen\n- (B) Microscopic organisms\n- (C) The smallest agent of disease\n- (D) Dead prehistoric beings\n- (E) female sex cells\n- (F) major threat to health\n- (G) remains of prehistoric life\n- (H) Something that smells like rotten eggs
Let's think step by step below.

User
Viruses are not cells at all, so they are neither prokaryotes nor eukaryotes. Viruses Viruses are the smallest agents of disease. The smallest agents of disease are not cells at all, so they are neither prokaryotes nor eukaryotes.
Thus, the answer is (C).
Assistant