Use the Following Information for Questions

Multiple Choice

Use the following information for questions:
A researcher is studying the relationship between sugar consumption and weight gain. Twelve volunteers were randomly assigned to one of two groups. The first group had five participants which were put on a diet low in sugar and the other group with the remaining seven participants received 10% of their calories from sugar. After 8 weeks, weight gain was recorded from each participant.
-The 'low sugar' group can be thought of as a control group. The control group is being used in this experiment to avoid

A) Confounding with the '10% sugar' group
B) Placebo effect
C) Nonresponse bias
D) Replication