Give diabetic freedom of choice in the foods they want to eat.
B. The air you breathe.
Because the rest of the choices are not environmental factors. Gang activity, and access to jobs and education are not environmental because environment are things about the world.
Cats are carnivores and dogs are omnivores
The sounds may vary from the <em>wavelengths</em>. The longer each wavelength is, the lower the pitch, and the shorter each wavelength is, the higher the pitch.