Answer:
B). The confounding of class section (morning, afternoon) and response method (clicker, notebook).
Explanation:
The given research study would not be able to reach a worthy conclusion or results as the study is flawed due to 'the confounding of class section (morning, afternoon) and response method (clicker, notebook).' Thus, the comparison or assessment of two sections through different methods would lead to bafflement or confusion(due to testing different sections of the class(morning, afternoon) through different methods(clicker, notebook) that would restrict the researchers to reach a conclusion. Therefore, the study would not reach a deduction and hence, <u>option B</u> is the correct answer.
A. Food. In any other situation it would apply to other, but as it seems they do not eat much food at home, this is their main source of food, it needs to be put there under food.
