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Folate deficiency during early pregnancy increases the risk of neural tube defects such as spina bifida. The recommended intake is 400 mcg/day for women of childbearing age. Many countries fortify grains with folic acid to reduce risk. Vitamin C deficiency causes scurvy, vitamin D deficiency causes rickets, and B6 deficiency leads to microcytic anemia. DTRs should counsel patients on the importance of folate-rich foods (leafy greens, legumes, fortified cereals) and supplementation. This is part of the Nutrition Science domain.

Goiter is an enlargement of the thyroid gland due to iodine deficiency, which impairs thyroid hormone production. Selenium deficiency also affects thyroid function but does not cause goiter. Zinc deficiency causes growth delay and poor wound healing, while calcium deficiency leads to bone issues. Public health measures such as iodized salt have reduced goiter prevalence worldwide. DTRs should recognize iodine sources (iodized salt, seafood, dairy) and educate patients. This belongs to the Nutrition Science domain.

Celiac disease is an autoimmune disorder triggered by the ingestion of gluten, a protein found in wheat, barley, rye, and their derivatives. When individuals with celiac disease consume gluten, their immune system damages the small intestinal villi, leading to malabsorption of nutrients. Casein is the protein in milk, albumin is an egg protein, and collagen is found in connective tissues—none of these are problematic for celiac patients. A dietetic technician must be able to identify gluten-containing foods (e.g., bread, pasta, crackers) and suggest safe alternatives (e.g., rice, quinoa, corn, and gluten-free labeled products). Providing education on label reading and cross-contamination prevention (e.g., using separate toasters) is essential. The nutrition care process involves assessing dietary intake, planning interventions, and monitoring adherence to a gluten-free diet, ensuring patients achieve nutritional adequacy and symptom relief. This reflects the Nutrition Science domain by integrating medical nutrition therapy into practice.

Food cost per meal = Total food cost ÷ Number of meals

= $25,000 ÷ 10,000 = $2.50 (Correction: option D is correct).

Detailed

Food cost per meal is a key performance measure in foodservice management. It helps managers control costs and compare with benchmarks. For example, healthcare institutions often target costs between $2.50–$3.50 per meal depending on service style. DTRs may assist in cost tracking, portion control, and waste reduction to maintain efficiency. This belongs to the Management domain, where financial accountability is essential.

A fishbone diagram (cause-and-effect diagram) helps identify multiple potential causes of a problem, such as trayline errors or late meal delivery. Gantt charts are used for project scheduling, flowcharts for process mapping, and benchmarking for comparing performance to standards. DTRs may participate in quality improvement teams using fishbone diagrams to analyze and solve issues. This fits under the Management domain.