C. Behavior
Although it does have some impact on the spread of disease, it is not a preventive measure to combat the spread of disease because it cannot be easily controlled.
EDIT: As my comment on the other answer states, this is incorrect. It is supposed to be a preventive measure, and antibiotics are not preventive, but behavior is.
Answer:
electron microscope
Explanation:
An electron microscope is a microscope that uses a beam of accelerated electrons as a source of illumination. As the wavelength of an electron can be up to 100,000 times shorter than that of visible light photons, electron microscopes have a higher resolving power than light microscopes and can reveal the structure of smaller objects.
Answer:
Sales made in bulk to another business
<span>D) tightly packed electrons</span>
