Final answer:
Immune compromised status is the condition that puts a client at the greatest risk for wound infection due to a weakened ability to fight off pathogens.
Step-by-step explanation:
Among the options provided, C. Immune compromised status puts a client at the greatest risk for wound infection. When an individual has a compromised immune system, they lack the necessary defenses to fight off pathogens that may enter through an injury or skin damage. As such, even a minor wound could result in a serious infection due to the inability of the person's immune system to respond effectively. This risk is elevated compared to the presence of a deep wound, coexisting medical conditions, or severely reddened skin, which may also increase the risk but are not as critical as an impaired immune system.