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.
1) C
2) A
all would be a risk due to swallowing puzzle pieces little kids put everything in their mouths. my thoughts
Answer:
Hey, thx...
As am I, of you
Thanks for the points, fam!
