Hypnotic and sedative agents can become lethal when taken in combination with which of the following, antibiotic agents

Bantacid agents
Ccns depressant agents
Dcentral nervous system (cns) stimulant agents

Verified Answer :

Hypnotic and sedative agents can become lethal when taken in combination with C. CNS DEPRESSANT AGENTS.

This is what I think. 

Hypnotic and sedative agents are suppressants or relaxants. If you combine this with the cns depressants agents, which is also a suppressant, then it would be like having an overdose. As we all know, overdosing on drugs will lead to lethal complications and ultimately death.