What is the exchange of gases between the lungs and the blood?

Question

What is the exchange of gases between the lungs and the blood?
  A. Internal respiration 	
  B. Posterior respiration 	
  C. External respiration 	
  D. None of the above
i'm lost please help me.

Reed · Answer

http://www.answers.com/Q/What_is_the_exchange_of_gases_between_the_lungs_and_the_blood_called

Ms. Sue · Answer

http://www.google.com/#q=+exchange+of+gases+between+the+lungs+and+the+blood

Martin1162 · Answer

So is it D?

Reed · Answer

yes, D