Final answer:
A stable eschar is dry and intact and offers protection during healing, whereas an unstable eschar is wet and prone to breaking down, posing risks of infection and delayed healing.
Step-by-step explanation:
The difference between a stable eschar and an unstable eschar primarily lies in their physical characteristics and the risks they present in the healing process. A stable eschar is typically dry and intact, indicating that it is preventing further infection and is more likely to stay in place until the tissue underneath has healed. On the other hand, an unstable eschar is often wet and easily breaks down, which can complicate the wound healing process by increasing the risk of infection and making it difficult for the new tissue to form and be protected. Hence, the correct answer to the student's question is the first option: A stable eschar is dry and intact, while an unstable eschar is wet and easily breaks down.