Answer: d. double-blind
Explanation:
A double blind study can be define as the study in which both the researcher and participant do not know which participant is receiving a particular treatment. This method is useful as it prevents the bias in the results of the experiment.
The given situation is the example of double-blind study. Here, the participants as well as the researcher do not know which group of subject are receiving bacteria in the yogurt and which group is not receiving.
<span>This is false - A plan should always be evaluated as it is carried out, and any changes made as deemed necessary to best achieve the objective.</span>
D. Raw sausage from his hands can contaminate the pancakes.
I'm pretty sure that would be false and would also go against some of the points of what your talking about. Not to mention it's rude to do so. I'm pretty sure anyways.
Hope that helps.
When we breathe, oxygen gets into our bodies. Every day about 2,000 gallons of circulating blood travel through an estimated 60,000 miles of blood vessels<span> which link all the cells and organs of our body.
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The respiratory system is made up of organs and tissues that help you breathe. The main parts of this system are the airways, the lungs and linked blood vessels, and the muscles that enable breathing.
