Question

if the lymphatic system finds an infection or something not right it alerts the
________ system to take it down.

reproductive

immune

cardiovascular

respiratory

Explanation:

The lymphatic system works closely with the immune system. The immune system's role is to defend the body against infections and foreign substances. When the lymphatic system detects an issue (like an infection), it alerts the immune system to respond and combat the threat. The reproductive system is for producing offspring, the cardiovascular system is for blood circulation, and the respiratory system is for gas exchange. None of these other systems are primarily responsible for dealing with infections like the immune system is.

Answer:

Immune