Which of the following best describes epidermal ridges?

Epidermal ridges, also known as dermal papillae, play a key role in the structure of the skin, specifically in the epidermal layer. These ridges are responsible for creating the unique patterns found on the fingertips, which contribute to fingerprints. The correct option highlights that these ridges can change throughout a person's lifetime. Factors such as growth, environmental influences, and even wear and tear can lead to alterations in the ridge patterns.

It's essential to recognize that while the basic formation of these ridges takes place during fetal development and is largely established at birth, they are not static. For instance, as a person ages or experiences skin damage, the appearance of the ridges can be affected. This flexibility in the structure contrasts with other aspects of skin development that may remain relatively fixed after maturation. Thus, the ability of epidermal ridges to change throughout life reflects the dynamic nature of skin adaptation to various factors, including biometric changes and lifestyle.