Answer- C. Atropine'According to AHA 2020 Guidelines, Atropine is no longer recommended for routine use in the management of pulseless electrical activity (PEA)asystole.'ACLS- medications for pulses arrestAtropine: deleted from pulseless arrest algorithmEpinephrine: dose, interval unchangedVasopressin: dose, use unchangedAmiodarone: dose, indications unchangedLidocaine: dose, indications unchangedSodium Bicarbonate: routine use not recommendedCalcium: for treatment of cardiac arrest not recommended