Answer:
Answer is A. Communicable disease.
Explanation:
The activity of the public health which is known to be the core or major function is the minimizing or stopping the spread or transmission of communicable or infectious diseases.
A communicable or infectious disease is a disease that can be transmitted from an infected person to other people that not infected. This usually occurs through body contacts, unprotected sexual intercourse, unscreened blood transfusion, sharing of unsterilized sharp objects among others.
Where are the "following structures"?
Answer:
B
Explanation:
competing for resources better helps the organism survive
