Eating healthily costs about $1.50 more per person daily, according to the most thorough review yet of the affordability of a healthy diet. 'For many low-income families, an【C1】______$1.50 daily is quite a lot,' says Mayuree Rao, 'It【C2】______to about $550 more per year per person, and that could be a real【C3】______to healthy eating.' Rao and her colleagues reached their【C4】______after analysing 27 studies from 10 high-income countries, comparing price【C5】______for healthy versus unhealthy ingredients and diets.【C6】______one study compared the cost of a diet rich in fruit and vegetables versus one that was【C7】______in them. Another compared prices of【C8】______healthy and less healthy items, such as wholegrain versus white bread. Individual items were【C9】______matched in price. Meats【C10】______the largest difference: healthier options cost an average of 29 cents per serving more than unhealthy options. 【C11】______this, comparisons of whole diets showed that healthier diets cost averagely $1.48 more per day. This shows that comparisons based on single ingredients dont tell the full【C12】______. 'It tells us that,【C13】______, it doesnt cost more to eat healthier based on one nutrient,' says Rao. 'But theres growing evidence that the【C14】______of foods in your diet【C15】______your disease risk more than any single nutrient, so we think our【C16】______finding that healthier diets cost about $1.50 more has the most public health【C17】______.' As to why healthier food has become more【C18】______Rao says that it may be because the food industry organizes itself and the types of food it produces to【C19】______its own economies of scale,【C20】______than whats best for consumers.【C1】A．availableB．adequateC．extraD．economical