Final answer:
In CPR, two people often switch positions after a certain amount of time to prevent exhaustion. The correct option is to switch every 3 minutes and take no more than 5 seconds to switch.
Step-by-step explanation:
In CPR, two people often switch positions after a certain amount of time to prevent exhaustion. The question asks how often they should switch and how long the switch should take. The correct option is B) Switch every 3 minutes, take no more than 5 seconds to switch.