Tetrodotoxin binds to sodium channels and blocks the passage of sodium ion based on this information which symptom would most likely occur in an organism exposed to tetrodotoxin? A. Decreased appetite due to the production of hormones that indicate fullness. B. Increased heart rate due to increased nerve impulses to the heart muscles. C. Blindness due to proteins in the eyes denaturing and losing functionality. D. Paralysis due to the lack of action potentials to signal muscle tissue.