"I'm going to hold my breath until I die and it will be all your fault!" shrieked 6-year-old Riley at her father. Why would she be unable to carry out her threat?

Decreased CO2 and hydrogen ion concentrations and increased oxygen concentration stimulate her chemoreceptors, triggering inspiration.

The inflation reflex would not her allow to keep her lungs full of air for a prolonged period. The reflex would trigger inspiration.

Increased CO2 and hydrogen ion concentrations and decreased oxygen concentration stimulate her chemoreceptors, triggering inspiration.

The diaphragm will begin to fatigue and will not be able to hold its contracted position for more than a short period of time.