Question

question 4
nails,
a alternate between growing and resting stages
b grow from their free edges
c protect the ends of digits
d are soft keratin
e are part of the dermis

Explanation:

Nails grow continuously (not alternating between growing and resting stages like hair), they grow from the matrix (not from free edges), they are made of hard keratin (not soft keratin), and they are part of the epidermis (not dermis). One of the main functions of nails is to protect the ends of digits.

Answer:

C. protect the ends of digits