Gastroesophageal Reflux Disease (GERD) ...
Gallstones. ...
Celiac Disease. ...
Crohn's Disease. ...
Ulcerative Colitis. ...
Irritable Bowel Syndrome. ...
The advantages of using mixed method are, the pros and cons can be identified and compared for each method. Thus option B is correct.
<h3>What are advantages of using mixed method?</h3>
Mixed methods in research is an advanced form which is basically a combination of quantitative research and qualitative research.
It can help the researcher to gain a more clear and complete picture as it integrates benefits of both methods.
Mixed methods research is used in the behavioral, health, and social sciences, societal research.
Qualitative research has smaller sample size, so mixed methods research is applied for the comparative strength of externally valid quantitative research.
Mixing methods allowed to get findings in detail to the conclusion.
Using mixed methods from different data on same subject can give more credible results.
Thus option B is correct.
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Answer:
Constant variables
Explanation:
Elaina's investigation lacked the critical ingredient of constant variables which are important components of every scientific investigation. In every research, there are 3 important variables, namely:
1. Dependent variables: the actual variable to be measured during the course of investigations and whose values are dependent on another variable (independent variable) supplied by the investigators.
2. Independent variable: one of the variables that are supplied by investigators whose values are often manipulated to see the kind of changes it will cause to the dependent variable.
3. Constant variables: other variables that are neither independent nor dependent but constant for all the various experimental groups in investigations.
