Final answer:
The subject question is related to medicine and focuses on the impact of aging on the integumentary system, highlighting that older patients experience impaired wound healing due to changes in the skin, such as decreased collagen and elastin production, leading to more severe burns like full thickness burns.
Step-by-step explanation:
When discussing spilled hot liquids on the leg and the resultant injuries in different age groups, especially full thickness burns, we're addressing changes within the integumentary system due to aging. In older patients, the reduced ability to regenerate skin as witnessed by impaired wound healing is more pronounced due to the dermis producing less collagen and elastin.
Additionally, there's decreased mitosis in the stratum basale, leading to a thinner epidermis, along with other factors like reduced blood circulation, hormonal levels and muscle strength which collectively contribute to slower healing processes and the increased severity of burns. Therefore, the answer to the question is Impaired Wound Healing (C). Older patients experience impaired wound healing which can lead to full thickness burns in cases where younger patients might have adequate regenerative capacity through active hair follicles contributing to re-epithelialization.