Epithelium provides a rigid shell to prevent punctures. Epithelium has capillaries to resist iron deficiency. Epithelium insulates the vertebrate from hypothermia. Epithelium prevents dehydration in vertebrates.
Which explains how the epithelium offers protection to land-dwelling vertebrates?

Options:
- Epithelium provides a rigid shell to prevent punctures.
- Epithelium has capillaries to resist iron deficiency.
- Epithelium insulates the vertebrate from hypothermia.
- Epithelium prevents dehydration in vertebrates.

Epithelium prevents dehydration in vertebrates.