A 23-year-old female patient presents to the ER with a feeling of being unable to catch her breath,.

A 23-year-old female patient presents to the ER with a feeling of being unable to catch her breath, light-headedness, and “tingling” of her fingers, toes, and around her mouth. This happens whenever she drives through a tunnel, and that is what set off this episode. Which of the following arterial blood pHs would be most consistent with her diagnosis? (A) 8.10 (B) 7.55 (c) 7.15 (d) 6.40 (E) 6.10