Answer:
B
Explanation:
Get a referral from his primary care physician.
According to the question, the actual percentage concentration of phenylephrine hydrochloride is 1.
<h3>What is Percentage concentration?</h3>
Percentage concentration may be defined as a type of measurement of the amount of solute dissolved in every 100 units of solution.
According to the question, the amount of phenylephrine hydrochloride = 50 mg.
The volume of injection = 5 mL.
Percentage concentration =
= 5/5 = 1.
Therefore, according to the question, the actual percentage concentration of phenylephrine hydrochloride is 1.
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Answer:
Intervention study
Explanation:
An intervention study is a type of controlled clinical trial in which an intervention is applied to a group of people and the outcome is compared to a similar group without the intervention. An example of this type of study is shown in the question above, where a margarine which vegetable ingredients (which is the intervention) will be given to a group of people, so that their blood cholesterol levels are compared to the cholesterol levels of a group of people who didn't use this margarine.