In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

On an unfortunate accident, first aid experts stress that (1)______ what to do for an (2)______ victim until a doctor or other trained person gets to the accident scene can (3)________ a life, especially in cases of stoppage of breathing, severe bleeding, and shock. People with special problems such as diabetes, epilepsy, or allergy are (4)________ to wear some sort of emblem identifying the problem, as a safeguard against administration of medication that might be injurious or even (5)_________.