The answer is C! Microorganisms are things like fungi and bacteria which INFECT and CONTAMINATE our immune systems! Nasty bacteria fights off our good bacteria and gives us diseases. Hope this helps!
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If your getting an iv of pure water and it goes into your veins their is a possibility it would lead to death.
It depends on which drug is to be given and what is its mechanism of action. e.g. for any antibiotic intra venous route will be a suitable choice whereas in case of a laxative we can administer it rectally if oral is not tolerated.
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