In this task, you're given an article, a question which often contains a blank and four options (associated with "A", "B", "C", "D"). Your task is to find the correct answer (from the given options) for the question from the given article and return one of the options from "A", "B", "C", and "D". Do not generate anything else apart from one of the following characters: "A", "B", "C", "D". There is only one correct answer for each question.

Article: Exercise is one of the few factors with a positive role in long-term control of body weight. Unfortunately, that message has not gotten through to the average American, who would rather try switching to "light" beer and low-calorie bread than increase physical efforts. The Centers for Disease Control, for example, found that fewer than one-fourth of overweight adults who were trying to lose weight said they were combining exercise with their diet. In rejecting exercise, some people may be discouraged too much by caloric-expenditure charts; for example, one would have to quickly walk hard three miles just to work off the 275 calories in one delicious Danish pastry . Even exercise professionals accept half a point here. "Exercise by itself is a very tough way to lose weight," says York Onnen, program director of the President's Council on Physical Fitness and Sports. Still, exercise's supporting role in weight reduction is vital. A study at the Boston University Medical Center of overweight police officers and other public employees confirmed that those who dieted without exercise regained almost all their old weight, while those who worked exercise into their daily routine maintained their new weight. If you have been sedentary and decide to start walking one mile a day, the added exercise could burn an extra 100 calories daily. In a year's time, assuming no increase in food intake, you could lose ten pounds. By increasing the distance of your walks gradually and making other dietary adjustments, you may lose even more weight.
Question: What is said about the average American in the passage?
Options: (A) They tend to hate "light" beer and low-calorie bread. (B) They usually ignore the effect of exercise on losing weight. (C) Most of them were combining exercise with their diet. (D) They know the actors that play a positive role in keeping down body weight.
B

Article: Looking back on my childhood. I am convinced that naturalists are born and not made. Although we were brought up in the same way, my brothers and sisters soon abandoned their pressed flowers and insects. Unlike them, I had no ear for music and languages. I was not an early reader and I could not do mental arithmetic. Before Word War I we spent our summer holidays in Hungary. I have only the dim memory of the house we lived in, of my room and my toys. Nor do I recall clearly the large family of grandparents, aunts, uncles and cousins who gathered next door. But I do have a crystal clear memory of dogs, the farm animals, the local birds and above all, the insects. I am a naturalist, not a scientist. I have a strong love of the natural world, and my enthusiasm has led me into varied investigations. I love discussing my favorite topics and enjoy burning the midnight oil reading about other people's observations and discoveries. Then something happens that brings these observations together in my conscious mind. Suddenly you fancy you see the answer to the riddle. Because it all seems to fit together .This has resulted in my publishing 300 papers and books. Which some may light honor, with the title of scientific research. But curiosity a keen eye, a good memory and enjoyment of the animal and plant world do not make a scientist? One of the outstanding and essential qualities required is self-discipline, a quality I lack. A scientist can be made a naturalist. If you can combine the two, you get the best of both worlds.
Question: According to the author, a born naturalist should first of all be _
Options: (A) full of ambition (B) self-disciplined (C) full of enthusiasm (D) knowledgeable
C

Article: What is so different about Moisture Surge? These hydrating formulas rapidly make thirsty skin smooth and soft. Oil-free and fit for all skin types, they help: Quickly increase skin's moisture level with hydrating relief in a high-speed delivery system; Restore skin's moisture balance; Make up dry lines. Moisture Surge Extended Thirst Relief Rapid, long-lasting hydration in a refreshing oil-free gel . Fast-absorbing formula locks in moisture all day and helps skin better resist dry despite great shifts in humidity. Use whenever, wherever needed, under or over makeup, or as a 5-minute moisture mask . Moisture Surge Face Water Thirsty Skin Relief Refreshing facial water. Great for use anytime, anywhere, under or over makeup. Moisture Surge Extra Refreshing Eye GEL* Cool and comfortable eye gel. Doctor-tested. Use whenever needed, under or over makeup. Moisture Surge Facial Sheet Mask* Refreshing, pre-moistened full-face sheet mask. Apply 1-2 times a week for a quick moisturizing. To use: unfold and apply to clean skin. Rest for 10 minutes, and then remove the mask. Moisture Surge Refreshing Eye Mask* Refreshing pre-moistened eye pads . Apply 1-2 times a week to reduce under-eye puffiness and skin with quick hydration. To use: remove pads from packets and separate. Apply to clean under-eye skin. Rest for 10 minutes, and then remove pads. Moisture Sheer Tint 15* Refreshing, wash of color that hydrates and makes skin bright with special materials and SPF 15 sunscreen. Three skin-friendly shades wear beautifully alone or under makeup. WARNING: keep out of eyes. Stop use if any pain occurs. Keep out of reach of children. Please pay attention to: *stands for "Not available in all countries. "
Question: According to the passage, Moisture Surge is the name of _ .
Options: (A) a product of eyes (B) an oil-free formula (C) a sun-blocking cream (D) a series of skin care products
D