An effective early childhood curriculum can be

a. developed by an accredited association only.
b. developed by a teacher only.
c. either pre-made by a company or developed by a teacher.
d. pre-made by a company only.

I believe the answer is C because it has multiple answers in one, and the most effective early childhood curriculum can have more than one solution.

this disease is :

* endemic (present in a defined area that is a village)

* a bacterial infection (treated with antibiotic)

* communicable by contact (by the hands)

manu-porterage is the most common mode of transmission, it transmits germs from one individual to another via the hands. this concerns infections of exogenous origin.

endemic disease, or endemic disease, refers to a disease that is constantly present in a given population, often tied to a specific geographic origin, as opposed to a pandemic that is not a sporadic disease.

antibiotics are molecules that have the property of killing (bactericidal) or limiting the spread (bacteriostatic) of bacteria.