If a document needs to be passed on to another person for assignment, you would delegate it. When you delegate something you pass it to someone to entrust them with the task. The correct answer is C.
The answer should be a mixture in which the substances are evenly spread out in biology terms.
I believe the answer is 3.
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If you have 20% of contracting the disease it wouldn’t be that dramatic but if you have 50% it’s pretty bad I think you won’t be able to see the person with 20 only 50 would have symptoms