which of the following best describes what alveoli are? a. they are the smallest tubes in the respiratory…

which of the following best describes what alveoli are? a. they are the smallest tubes in the respiratory system. b. they have a small amount of surface area. c. they are found on the end of bronchioles. d. they are comprised of millions of cells. please select the best answer from the choices provided. o a o b o c o d

which of the following best describes what alveoli are? a. they are the smallest tubes in the respiratory system. b. they have a small amount of surface area. c. they are found on the end of bronchioles. d. they are comprised of millions of cells. please select the best answer from the choices provided. o a o b o c o d

Answer

Answer:

C. They are found on the end of bronchioles.

Brief Explanation:

Alveoli are tiny air - sacs at bronchiole ends for gas exchange. They have large surface area and are single - celled in structure, not the smallest tubes.