The deficiency of vitamin B12 is a very rare case that would give rise to many conditions such as muscle cramps, difficulty walking, and numbness. This vitamin is crucial to the body and is also sometimes referred to as cobalamin.
Hey there!
Well, qualitative observation is basically a measurement and it can be measured exactly.
Out of all the choices, your answer is C. Joseph is observing the color of the reaction mixture to see whether proteins are present in the given solution. This is because you can quickly tell if there are proteins present or not.
Options A and B are not as easy to measure.
Hope this helps you.
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Explanation:
when those components become excessive, they become harmful
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