B, the food you eat should be mainly cereals or roots, not just fruits and vegetables.
C. If the human body ingests more salt, it will increase the burden on internal organs and easily lead to high blood pressure.
D, reasonable diet, must ensure that three meals a day, eat on time; In the total daily energy intake, the energy of breakfast, lunch and dinner accounts for about 30%, 40% and 30% respectively. The proportion of various nutrients should be appropriate. This item fits the meaning of the question.
Therefore, choose: d.