Some of the epidermal cells form very fine and delicate, thread-like structures called root hairs, from which of the labelled region of the root, in the below given diagram?

 

 

 

Explanation:

• Region D is above the root tip and elongation zones and is where root hair cells (epidermal outgrowths) develop.
• These root hairs increase the surface area for water and nutrient absorption from the soil.
• Other regions, such as A (root cap), B (region of cell division), and C (region of elongation), do not produce root hairs.

So, the correct answer is: Region D (maturation zone).