Answer:
Primary
Step-by-step explanation:
There are mainly "Three Levels of Disease Prevention" and these are:
1. Primary Prevention
2. Secondary Prevention
3. Tertiary Prevention
Training the daycare workers also means "educating them about preventive measures" in order to prevent the infants and children from contracting diseases. This falls under "Primary Prevention" because it is trying to avoid the possibility of children developing the disease in the future.
"Secondary Prevention" is tackling on the detection of illness signaled by symptoms, while the "Tertiary Prevention" is focusing on the improvement of the life of a person with disease.