Definitely D is the answer.
Answer:
Body Fat Ratio. It is a new indicator of obesity. It is far more efficient that the Body mass index. The main reason for this is that BMI does not differentiate between muscle mass and fat mass and it also does not differentiate central obesity.
Body fat ratio has been exactly devised in order to root out all the fallacies associated with BMI. It is the current best obesity indicator available to us.
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.
Explanation:
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Write about:
A) Why you want to be a veterinarian
B) How you plan to accomplish your goal (your path to success)