**Question:** A 6-year-old child has a DQ of 50. Which of the following can the child do?

A. Develop a healthy immune response
B. Produce sufficient amounts of insulin
C. Maintain normal blood sugar levels
D. Maintain normal blood pressure

**Core Concept:** DQ (Disease-Specific Quantity) is a measure of the amount of disease-causing molecules present in the body, particularly in the context of autoimmune diseases. A higher DQ value indicates a higher risk for developing autoimmune disorders.

**Why the Correct Answer is Right:** A DQ of 50 suggests that the child has a higher risk for autoimmune disorders due to the high quantity of disease-causing molecules in the body. In this context, option A is correct because developing a healthy immune response is essential for the child to recognize and fight off these disease-causing molecules effectively, thereby preventing autoimmune diseases.

**Why Each Wrong Option is Incorrect:**

- Option B (producing sufficient amounts of insulin): Although insulin production is important for managing diabetes, the focus here is on the risk of autoimmune diseases rather than the specific disease (diabetes).
- Option C (maintaining normal blood sugar levels): While blood sugar regulation is crucial, the question is about autoimmune risk, not the disease itself.
- Option D (maintaining normal blood pressure): Blood pressure management is important for overall health, but the question is specifically about autoimmune risk, not hypertension or other cardiovascular conditions.

**Clinical Pearl:** DQ testing can help identify children at higher risk for autoimmune diseases, allowing for early intervention, monitoring, and potential prevention strategies. It is essential for healthcare providers to be aware of the child's DQ value and focus their preventive measures accordingly.