单选题 The nurse is evaluating a client's lung sounds. Which of the following breath sounds indicate adequate ventilation when auscultated over the lung fields?
A. Vesicular.
B. Bronchial.
C. Bronchovesicular.
D. Adventitious.

【正确答案】 A

【答案解析】Vesicular breath sounds are normal breath sounds heard over all lung fields except the main bronchi.