Darlene is a 5′ 2′′, 23-year-old woman who weighs almost 250 pounds. to lose weight, she's tried calorie-restricted diets, fad diets, exercise programs, and appetite-suppressant pills without success. she would like to try a surgical weight-loss method that reduces the size of her stomach without the use of staples and is reversible. her physician is likely to recommend ________.