"I'm going to hold my breath until I turn blue and stop breathing and die and it will be all
your fault!" shrieked the 6-year-old at her father. The child was unable to carry out her
threat because
A) she could not take in enough oxygen.
B) increased CO2 and hydrogen ion concentration and decreased oxygen concentration
stimulate chemoreceptors.
C) decreased CO2 and hydrogen ion concentration and increased oxygen concentration
stimulate chemoreceptors.
D) she never stopped talking long enough to try to hold her breath.
B
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