Final answer:
In an aircraft's jumpseat, to reach the oxygen mask, you would need to pull a cord or string that is positioned above your seat. This will cause the oxygen mask to drop down for use, crucial during a sudden drop in cabin pressure.
Step-by-step explanation:
When seated in a jumpseat, typically found in aircrafts, to access the oxygen mask you would pull a string or cord located just above your seat. There is usually a sign or symbol indicating the location of the mask. Once the cord is pulled, an oxygen mask will drop down for the individual to use. This is particularly important in case of a sudden decrease in cabin pressure where breathable air becomes sparse.
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