You are presented with the quiz "Blood pH may become unbalanced if someone is " 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "blood pH may become unbalanced if the rate of breathing is too fast or too slow" and "if Someone Is Hyperventilating Hyperventilation is caused by breathing too deeply, too fast". 

So, what's the best answer to the question?


 

   hyperventilating        