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.
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The correct answer is : B. The "mind-set" of the athlete in reference to competition and intensity of the exercise or sport
This mind-set will reflect to the athlete's physical and mental focus during the competition.
the best Professional athletes are capable to immerse themselves 100% to the game, which increase all 5 of their sense and make their performance more optimal
