Calhoun, d., broder., karlin, k., howard, b., schuldberg, d., & fiore, c. (2010). effectiveness of motivational interviewing for improving self-care among northern plains indians with type 2 diabetes. diabetes spectrum, 23(2), 107-114.

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous