Final answer:
The 'three C's' of a TCAD overdose might be best matched with the first option, which includes Convulsions and Coma, as these can occur in severe cases of a TCAD overdose. None of the provided options perfectly match the classic 'three C's'.
Step-by-step explanation:
The three C's that are indicative of a TCAD (tricyclic antidepressant) overdose are: Convulsions, Coma, and Cardiac arrhythmias. Based on the information provided regarding various poisonings and overdose symptoms, none of the multiple-choice options directly match the classic 'three C's' of a TCAD overdose. However, the closest answer from those provided that resembles some effects of serious overdoses would be option 1) Coughing, Convulsions, Coma. This is because convulsions and coma are symptoms that can occur in severe cases of TCAD overdose. The other two options are not closely related to the classic symptoms of such an overdose.
Symptoms of an overdose with substances such as barbiturates, carbon monoxide, and cyanide can include a variety of symptoms such as difficulty thinking, slowness of speech, faulty judgement, drowsiness, shallow breathing, staggering, coma, seizures, and cardiovascular issues like arrhythmias.