It's not D.
Please look up the meanings of those three words.
Need Help !
An instrument called a ________ is used to measure the volume of air that moves into and out of the lungs.
A. Hydrometer
B. Barometer
C. Spirometer
D. None of the above
I think its D , But Don't Wanna Get Wrong .
3 answers
C is the right answer because
The spirometer measures the air capacity of the lungs
The spirometer measures the air capacity of the lungs
C...spirometer
2 answers