<prompt> 25-year-old woman is being treated for a laceration to the forearm. Local anesthesia is used prior to suturing. An allergic reaction is most likely to occur with wof local anestheticsLidocaineProcaineMepivacaineBupivacaine  <response>: The clinically useful LAs are weak bases with amphiphilic propey. A hydrophilic secondaryor teiary amine on one side and a lipophilic aromatic residue on the other are joined by an alkyl chain through an ester or amide linkage. Ref :- kd tripathi; pg num:-360,361 