Which type of drugs kill pain by blocking impulses at specific receptor sites of the brain and spinal cord? narcotic analgesics non-narcotic analgesics anti-psychotics tranquilizers

I believe the correct answer from the choices listed above is the second option. Analgesics are the drugs that kill pain by blocking impulses at specific receptor sites of the brain and spinal cord. Analgesics are drugs that alleviate pain without causing anesthesia. Hope this helps.

Ithink it's carbonic acid

If it isn’t a then it has to be d idk tho cause there’s no picture