Answer:
Option A. Andy should follow this strategy in order to prevent becoming underweight: He should increase his activity and exercise levels and add more calories to gradually gain weight.
Step-by-step explanation:
If Andy wants to increase his level of activity and exercise while also preventing to keep on losing more weight and becoming underweight, he should follow the strategy of increasing his physical activity while adding more calories to gradually gain weight. No matter what goal the person is trying to achieve with his/her weight, exercising should always be a part of the strategy, as living an active lifestyle is not only good for losing weight, but is a vital part of being healthy, therefore even when Andy wants to gain weight, he should not stop or decrease his physical activity. In order to gain weight, he needs to add more calories to his diet, making sure that those extra calories are coming from whole-foods and not processed ones, filled with sugars and unhealthy fats, which can be bad for his general health. by increasing his physical activity and adding more healthy calories, Andy will gradually gain the weight he has lost in the last months.