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.
Correct. but i would add a little bit of spice
The questions on those medical history forms contain some very important information.
hope this help!
A job expects more responsibility from its worker, and there's less room to slack off and make mistakes. At home, certain things can be excused or put off, but in a work environment, situations need to be taken more professionally.
