Answer:C.people with perfect understanding of science.
K has the lowest and Br has the higher
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Methane is a chemical compound with the molecular formula CH4. It is the main component in natural gas. Methane is considered the simplest of alkanes, compounds that consist only of hydrogen (H) and carbon (C) elements. Methane is an odorless, colorless, tasteless gas that is lighter than air.
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Explanation: what do you need help on??? :?
Okay well it is saying you will have to give the vaccine to the patient from the shot thingy i guess