Provide an Appropriate Response

Provide an appropriate response.
-A nutritionist wants to conduct a study to validate the efficacy of an herb as an aid in weight loss. She randomly
Assigns half of a group of overweight persons to a treatment group who are given the herb with instructions as
To use and a planned diet for six weeks. The other half of the group is given the same diet without the herb.
Participants are aware as to which group they belong. She weighs each subject on Friday of each week. What
Type of blinding is being used?

A) triple-blind
B) double-blind
C) does not use blinding
D) single-blind