A、Because this is not healthy. B、Because too little is in the container. C、Because you have to pay more. D、Because fruits can go

Over the years, the same bag of groceries you once bought has now doubled in price. To save yourself money, you should learn a few simple tips that will change your buying habits.
   Never go shopping when you are "starving", because when you are hungry everything looks good, and you buy more than you need, and even things you don’t need. Also avoid shopping with the kids. Children love junk food and they’ll beg you to purchase what you don’t need.
   Make it a habit to see what is on sale. Make a list of what you need to buy and buy only what is on the list. Use a pencil and check off food items as you put them into the cart. When everything on the list is checked off, head for the checkout counter and leave the store.
   Buy only the amount of food you want. If the food is wrapped in a package of four, tell the clerk that you only need two. He will open the package and give you what you ask for.
   Do not buy fruits already cut up and sold in a plastic container. You are paying double for having someone cut the melons into small pieces, so you should buy a whole melon and cut it yourself, which will take you only a few minutes to do at home. Avoid buying produce that is packaged or bagged. Try buying products where you can select them individually, so you can see the quality of what you are getting. Weigh what you buy and put it into the plastic bags that hang near the scales.
   Q13: What do you have to avoid doing at a supermarket?
   Q14: Why is it unwise to buy fruits wrapped in a plastic container?
   Q15: What is this passage trying to tell us?