It would be c because of the kids trying to learn
Answer:
there are five important heart disease risk factors that you can control. A poor diet, high blood pressure and cholesterol, stress, smoking and obesity are factors shaped by your lifestyle and can be improved through behavior modifications. Risk factors that cannot be controlled include family history, age and gender.
Explanation:
Number one is A im not sure about the second one but i believe its c
C. No one knew germs existed
Therefore diseases spread because they did not know how to prevent them and they did not have good hygiene.
Proper handling of needles :)