Answer:
Orally.
Interosseous.
Intramuscularly.
Subcutaneously.
Endotracheal tube.
Step-by-step explanation:
Interosseous, intramuscularly, endotracheal tube
(Rationale: Ideally during an anaphylactic reaction intravenously administration of epinephrine would be the best route. In the event, an intravenous route is not available, epinephrine can be administered order of preference for faster absorption, tibial interosseous, followed by endotracheal tube after the dose has been diluted in 2.5mL of normal saline before being administered down the ETT. Intramuscularly would be your last option if no other access was available due to the slow absorption rate.)