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:

• The number of subjects: Tasha can decide how many people to include in her study.
• Age and sex of the subjects: She can recruit participants within specific age ranges and genders.
• Length of the study: She can determine how long the study will last.
• Lifestyle and physical condition of the subjects: While she can select subjects with certain general lifestyle tendencies (e.g., non - smokers), people's exact lifestyle (e.g., exact exercise routines on a daily basis) and physical condition (e.g., if they get a cold during the study) can be hard to fully control.
• Genetic variances among the subjects: Genetics are inherent and cannot be controlled by the researcher.

Answer:

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