Emphysema is a lung disease that causes shortness of breath. It is caused due to damage in alveoli is damage. These alveoli are the air sacs that help in gaseous exchange in the bloodstream and lungs.
Ruptured or weaken walls of the alveoli of the lungs produce air space that stays filled with air during exhalation, it is an abnormal condition that causes shortness of breath.
Answer: Option C) Root hairs have an elongated shape that increases the surface area-to-volume ratio.
Explanation:
The larger surface area-to-volume ratio of root hairs enables them to rapidly absorped water molecules and nutrients along their elongated shape while aiding their upward transport from the root up the shoot (through the xylem vessels).
