**Core Concept**
Hypocalcemia refers to lower-than-normal calcium levels in the blood, which is crucial for various bodily functions including muscle contraction, nerve function, and bone health. The condition can result from various causes such as vitamin D deficiency, parathyroid hormone (PTH) abnormalities, and renal failure.

**Why the Correct Answer is Right**
Since the options are missing, let's discuss the general approach to hypocalcemia. Typically, hypocalcemia presents with features like tetany, muscle cramps, and hyperreflexia due to increased neuromuscular excitability.

**Why Each Wrong Option is Incorrect**
**Option A:** Would be incorrect if it mentioned a common symptom of hypocalcemia.
**Option B:** Similarly, would be wrong if it described another typical feature.
**Option C:** Incorrect if it outlined a known consequence.
**Option D:** This would be the correct choice if it mentioned something not associated with hypocalcemia, such as hyperreflexia being decreased.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that hypocalcemia can lead to **Chvostek's sign** and **Trousseau's sign**, which are important clinical indicators of the condition.

**Correct Answer:** D. Hyperreflexia is decreased in hypocalcemia.