Question

tasha is a graduate student studying health and nutrition. a recent study has made claims about the health benefits of dark chocolate. tasha would like to conduct a similar study to see if she can confirm the findings of the first. she wants to make sure that her study is as close to the original as possible. which factors of her study can she control? check all that apply. lifestyle and physical condition of the subjects the number of subjects genetic variances among the subjects age and sex of the subjects length of the study

Explanation:

Tasha can control the number of subjects, age and sex of the subjects, and length of the study as she can set criteria for participant selection and define the study - time frame. Lifestyle and physical condition, and genetic variances among subjects are difficult to fully control as they are inherent or self - determined by the subjects.

Answer:

• the number of subjects
• age and sex of the subjects
• length of the study