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.
A.) Prejuice is the answer u are looking for
<span>Reaction time is the time from the start of the stimulus to to the beginning of movement in reaction to the stimulus. Since she has high cardiorespiratory endurance there is a greater coordination in the working of her heart, muscles and lungs. This will help her to get a good reaction time and will increase her performance level.</span>
<em><u>Answer:</u></em>
<em><u>Answer:i copied the answer below•</u></em>
<em><u>Answer:i copied the answer below•Explanation:</u></em>
<em><u>Heart disease, heart attack, high blood pressure and stroke. Sleep problems. Weight gain. Memory and concentration impairment.</u></em>