For an unconscious person showing symptoms of shock, which of these steps should you perform to provide first aid?
A. Have the person take a short walk.
B. Sit the person up against a wall.
C. Place ice on the person forehead.
D. Check the person's airway and breathing.

Which of the following processes within viral replication is the greatest source of genetic variation in rna virus populations? a) high mutation rate due to lack of proofreading of rna genome replication errors.b) transcription from the host cell rna polymerase introduces numerous mutations.c) capsid proteins from the host cell can replace the viral capsid.d) viral rna is translated by host cell ribosomes.