**Core Concept**
The question is testing the student's understanding of a specific condition related to the consumption of rice milk, which is a common allergen. The student needs to recognize the symptoms of an immune-mediated reaction, specifically anaphylaxis or anaphylactoid reaction.

**Why the Correct Answer is Right**
Rice milk consumption can lead to anaphylaxis or anaphylactoid reactions in some individuals, particularly children. The symptoms presented, including a protruded abdomen and low albumin levels without proteinuria, are consistent with anaphylaxis. Anaphylaxis leads to the release of histamine and other mediators from mast cells, which can cause increased vascular permeability and fluid shift into the interstitial space, resulting in edema and decreased albumin levels. This is a classic presentation of anaphylactic shock.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not address the specific symptoms and mechanism of anaphylaxis related to rice milk consumption.
* **Option B:** This option is incorrect because it does not provide a plausible explanation for the symptoms and low albumin levels without proteinuria.
* **Option C:** This option is incorrect because it does not account for the specific allergen (rice milk) and the symptoms presented.

**Clinical Pearl / High-Yield Fact**
Anaphylaxis is a medical emergency that requires immediate treatment with epinephrine, antihistamines, and corticosteroids. It is essential to identify the allergen causing the reaction and take measures to avoid future exposure.

**Correct Answer:** D.