Answer:
Stage III.
Step-by-step explanation:
Pressure injuries may be defined as the injury that affects the skin and the underlying tissue. The circle pressure injury includes the four different stages of the injury.
According to the question, the stage III of the injury has been shown. In this stage the full tissue thickness has been lost through dermis. The muscle are not exposed but subcutaneous fat can be seen. The slough may be visible and undermining can occur.
Thus, the answer is Stage III.