In which part of the human respiratory system does actual oxygen exchange take place?

a.) bronchi
b.) trachea
c.) diaphragm
d.) alveoli

Alveoli are the part of the human respiratory system where actual oxygen exchange takes place.

Alveoli are tiny sacs within our lungs that allow oxygen and carbon dioxide to move between the lungs and bloodstream. Learn more about how they function and quiz your knowledge at the end.

The correct answer between all the choices given is the last choice or letter D. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

not: both offer magnification to the atomic level.