Answer:
Option (D).
Step-by-step explanation:
Newborn and adult skin shows the largest difference in their structure and function. The skin development of newborn takes time even after birth. The fibrils are present less in number in newborns.
The structure of the adult and new born sweat gland is quite similar. The newborn sweat gland are not fully functional at the time of birth and takes around 2 to 3 years for complete development.
Thus, the correct answer is option (D).