Young people are increasingly becoming awa

问题：

Young people are increasingly becoming aware of the need to change their eating habits, because much of the food, particularly processed food they eat is not good for health. (67) , there has been a growing interest in natural foods: foods which do not contain chemical additives and (68) are not affected by chemical fertilizers, widely used in farming today.
Natural foods, for example, are vegetables, fruit and grain which have been grown in soil rich (69) organic matter. In simple terms, this means the soil has been nourished by vegetable matter, which (70) it with essential vitamins and minerals. This in itself is a /an (71) process compared with the use of chemicals and fertilizers, the main purpose (72) is to increase the amount of foods (73) in commercial farming areas.
Natural foods also included animals which have been allowed to (74) and move freely in healthy grassland. Compare this with (75) happens in the mass production of chickens: Thousands of chickens are (76) in one building and are fed with food which is (77) better than rubbish. Such chickens are not only tasteless (78) food; they also produce eggs (79) vitamins.
There are other (80) of healthy eating which are receiving attention from experts on diet. It is significant that nowadays fiber is (81) to be an important part of a healthy (82) In white bread, for example, the fiber has been removed. But it is (83) in unrefined flour and vegetables. In places where the national diets (84) large quantifies of unrefined flour and vegetables, certain diseases are comparatively (85) . Hence the emphasis are placed (86) the eating of whole bread and more vegetables.

A．diet

B．style

C．eating

D．factor