Despite a widely publicized health campaign encouraging residents to increase their fruit and vegetable intake, local grocery stores reported no significant increase in sales of fresh produce over the past year. Which of the following, if true, most helps to explain the discrepancy?

The correct answer to the question "Despite a widely publicized health campaign encouraging residents to increase their fruit and vegetable intake, local grocery stores reported no significant increase in sales of fresh produce over the past year. Which of the following, if true, most helps to explain the discrepancy?" is Option D: Residents are increasingly growing their own fruits and vegetables in home gardens..

The other options — A) Many residents are already consuming the recommended daily amount of fruits and vegetables., B) The health campaign primarily targeted school-aged children, who have limited purchasing power., C) The cost of fresh produce significantly increased during the same period. — are incorrect for this GMAT Exam Prep question. As explained above: If residents are growing their own produce, they could be increasing their intake without purchasing more from grocery stores. This explains why sales didn't rise despite the campaign's success in en…