Xiaogang went to a hospital in Shaoyang to visit patients and passed by the patient canteen of the hospital. On the bulletin board in the canteen, he saw today's cookbook: Xiaogang thinks that the cookbook has no nutrition. Six nutrients needed by human body: protein, sugar, oil, vitamins, inorganic salts and water; Combined with the meaning of the question, rice, steamed bread and noodles are mainly rich in starch, which belongs to sugar, while braised pork, stewed chicken, home-made tofu and egg soup contain oil, protein and inorganic salts, indicating that the vitamin content in food is less; Therefore, in order to make the nutritional collocation more reasonable, it is necessary to supplement foods rich in vitamins.

A, fish is rich in protein, so the option is wrong.

B, beef is rich in protein, so the choice is wrong.

C, lobster is rich in protein, so the option is wrong.

D, tomatoes are rich in vitamins, so the choice is correct.

So choose D.