Which symptom corresponds with lower severity of poisoning effects?

The symptom of minimal drowsiness indicates a lower severity of poisoning effects because drowsiness is often a sign of central nervous system depression, which can occur in cases of poisoning. If a person exhibits minimal drowsiness, it suggests that the poisoning is not severely impacting their level of alertness or consciousness.

In contrast, symptoms such as severe agitation, loss of consciousness, and cardiac arrest are indicative of more severe toxicity and greater health risks. Severe agitation could indicate a high level of anxiety or neurological distress, while loss of consciousness points to significant impairment of brain function. Cardiac arrest represents a critical and life-threatening condition often associated with severe systemic effects of poisoning. Therefore, minimal drowsiness is consistent with a less severe degree of poisoning compared to these other symptoms.